| Ruler | Born | Reign | Ruling part | Consort | Death | Notes |
|---|
| Sizzo I [bg] | | c.1000? Son of Sizzo[12] or Günther[13] | c.1030-1050 | County of Schwarzburg | Unknown at least one child | c.1050 aged 49–50? | Probably the founder of the family. Sometimes attributed to his possible father, Günther. |
| Sizzo II [bg] | | c.1030? Son ofSizzo I [bg] | c.1050-1118 | County of Schwarzburg | Unknown at least one child | c.1118 aged 77–78? | |
| Günther I [bg] | | c.1050? Son ofSizzo II [bg] | c.1070-1109 | County of Käfernburg | Matilda Yaropolkovna of Turov-Pinsk after 1087 two children | c.1109 aged 58–59? | Cited as Count of Käfernburg, and predeceased his father. |
| Sizzo III [de] |  | 1093 Son ofGünther I [bg] andMatilda Yaropolkovna of Turov-Pinsk | 1109-1118 | County of Käfernburg | Gisela of Berg (d.20 March 1142) c.1133 four children | 19 June 1160 aged 66–67 | Reunited Schwarzburg after the death of his grandfather, Sizzo II. |
| 1118 – 19 June 1160 | County of Schwarzburg |
| Henry I [de] | | 1130 First son ofSizzo III [de] andGisela of Berg | 19 June 1160 – 26 July 1184 | County of Schwarzburg | A lady Winzenburg 1170 one child | 26 July 1184 aged 53–54 | Children of Sizzo III, divided the inheritance. After Henry I's death, his brother reunited Schwarzburg once more. |
| Günther II [de] | | 1135 Second son ofSizzo III [de] andGisela of Berg | 19 June 1160 – 26 July 1184 | County of Käfernburg | Agnes of Saarbrücken four children
Adelaide of Loccum-Hallermund [de] 1178 three children | 1197 aged 31–32 |
| 26 July 1184 – 1197 | County of Schwarzburg |
| Henry IIthe Elder [de] | | c.1160 First son ofGünther II [de] andAgnes of Saarbrücken | 1197 – 20 February 1236 | County of Schwarzburg | Irmgard of Weimar-Orlamünde 1211 seven children | 20 February 1236 aged 75–76? | Children of Günther II, divided their inheritance. Gunther III co-ruled with his older brother Henry until 1216. Ludolf inherited Hallermund through his mother. |
| Günther III [bg][14] | | c.1160 Second son ofGünther II [de] andAgnes of Saarbrücken | 1197-1216 | County of Schwarzburg | Dietburg of Anhalt (1169-1228) two children | 1223 aged 62–63? |
| 1216-1223 | County of Käfernburg |
| Ludolf II [de][15] | | 1180 Son ofGünther II [de] andAdelaide of Loccum-Hallermund [de] | 1197 – 15 November 1256 | County of Hallermund | Unknown four children
Kunigunde of Pyrmont one child | 15 November 1256 aged 75–76? |
| Henry IIIthe Younger | | 1219/20 First son ofHenry II [de]andIrmgard of Weimar-Orlamünde | 20 February 1236 – 1258/9 | County of Schwarzburg | Sophie of Hohnstein c.15 March 1247 one child | 1258/59 aged 38–40 | Children of Henry II, divided their inheritance, but the childless death of Henry III made possible for Gunther IV to reunite the land once more. |
| Günther IV | | 1219/20 Second son ofHenry II [de]andIrmgard of Weimar-Orlamünde | 20 February 1236 – 1258/9 | County of Blankenburg | Sophia nine children | 1275/78 aged 38–40 |
| 1258/9-1275/8 | County of Schwarzburg |
| Günther IV [bg][16] | | c.1200? First son ofGünther III [bg] andDietburg of Anhalt | 1223-1268/9 | County of Käfernburg | Matilda of Beichlingen before 10 December 1254 two children | 1268/9 aged 68–69? | Children of Gunther III of Schwarzburg, divided their inheritance at Kafernburg. |
| Albert I [bg] | | c.1200? Second son ofGünther III [bg] andDietburg of Anhalt | 1223-1255 | County of Wiehe | Unknown five children | c.1255 aged 54–55 |
| Albert II | | c.1240? First son ofAlbert I [bg] | 1255-c.1285 | County of Wiehe | Unmarried | c.1285 aged 44–45? | Children of Albert I, divided their inheritance. |
| Frederick | | c.1240? Second son ofAlbert I [bg] | 1255-1312 | Elisabeth of Neuenburg before 8 July 1280 two children | 1312 aged 71–72? |
| Berthold | | c.1240? Third son ofAlbert I [bg] | 1255 – 7 August 1312 | County of Wiehe (atRabenswald) | Wilibirg of Helfenstein 1277 no children | 7 August 1312 aged 71–72? |
| Gisela | | c.1240? Daughter ofAlbert I [bg] | 1255-1278 | County of Wiehe (atHardegg) | Burchard VI, Burgrave of Magdeburg c.1260? at least one child | 1278 aged 37–38? |
| Rabenswald rejoined Wiehe; Hardegg annexed to Magdeburg |
| Ludolf III | | c.1200? Son ofLudolf II [de] andKunigunde of Pyrmont | 15 November 1256 – 1266 | County of Hallermund | Jutta of Hoya six children | 1266 aged 65–66? | It's possible that, after his death, his children divided the county. |
| Wilbrand III[17] | | 1250? First son ofLudolf III andJutta of Hoya | 1266-1280 | County of Hallermund (half 1) | Adelaide of Adenoys five children | 1280 aged 29–30? | Sons of Ludolf III, possibly divided the county. Ludolf IV becamecanon atHildesheim in 1275, possibly abdicating from the co-ruling in that year. |
| Ludolf IV | | 1250? Second son ofLudolf III andJutta of Hoya | 1266-1275 | County of Hallermund (halves 1 and 2?) | Unmarried | c.1291 aged 40–41? |
| Gerhard Ithe Elder | | 1250? Third son ofLudolf III andJutta of Hoya | 1266-1326 | County of Hallermund (half 2) | Unknown seven children
Gerburg of Homburg before 14 September 1317 two children | 1326 aged 75–76? |
| Günther Vthe Elder [bg] | | c.1230? Son ofGünther IV [bg] andMatilda of Beichlingen | 1269-1273/5 | County of Käfernburg | Matilda of Schwarzburg c.1250? four children | 1273/5 aged 43–45? | |
| Günther VIthe Elder [bg] | | c.1250? First son ofGünther V [bg] andMatilda of Schwarzburg | 1273/5 – 1289 | County of Käfernburg (withCounty of Arnstadt (half 1)) | Sophia of Lüchow twelve children | February/March 1289 aged 38–39? | Sons of Günther V, divided their inheritance. |
| Günther VIIthe Younger [bg] | | c.1250? Second son ofGünther V [bg] andMatilda of Schwarzburg | 1273/5 – 10 June 1302 | County of Arnstadt (half 2) | Adelaide of Schwarzburg c.1275? two children | 10 June 1302 aged 51–52? |
| Günther V [bg] | | c.1235 First son ofGünther IV and Sophia | 1275/8-1292/3 | County of Schwarzburg | Irmgard nine children
Helena of Saxe-Lauenburg [bg] 1283 no children | 1292/3 aged 56–57? | Children of Günther IV, divided their inheritance. |
| Henry IV [bg] | | c.1235 Second son ofGünther IV and Sophia | 1275/8-1287 | County of Blankenburg | Sofia Daniilovna of Galicia-Volhynia [uk] 1259 two children | 1287 aged 51–52? |
| Gerhard IIthe Younger | | c.1270? First son ofWilbrand III andAdelaide of Adenoys | 1280-1345/6 | County of Hallermund (half 1) | Elisabeth of Everstein-Polle thirteen children | 1345/6 aged 75–76? | Children of Wilbrand III, ruled jointly. |
| Wilbrand IV | | c.1270? Second son ofWilbrand III andAdelaide of Adenoys | 1280-1301 | Unmarried | c.1301 aged 75–76? |
| Henry VI[18] | | c.1270 First son ofHenry IV [bg] andSofia Daniilovna of Galicia-Volhynia [uk] | 1287 – 11 November 1324 | County of Blankenburg | Christina of Gleichen-Tonna 1268 seven children
Oda of Henneberg-Hartenberg c.1310/20? no children | 11 November 1324 aged 53–54 | Sons of Henry IV, divided their inheritance. |
| Günther VII[18] | | c.1270 Second son ofHenry IV [bg] andSofia Daniilovna of Galicia-Volhynia [uk] | 1287-1326 | County of Blankenburg (atLeutenberg) | Unknown no children
Catharina Reuss of Gera two children
Matilda (d.1373) no children | 10 December 1352 aged 81–82? |
| Leutenberg is annexed by the main branch of Schwarzburg |
| Günther VIII [bg] | | c.1270? First son ofGünther VI [bg] andSophia of Lüchow | 1289-1318/24 | County of Käfernburg | Irmgard of Schwarzburg six children | 1318/24 aged 48–54? | Sons of Günther VI. Gunther VIII and Otto divided the inheritance. Gunther IX and Gunther X ruled alongside their brother Gunther VIII. Having left no children of his own, Otto left his part of Arnstadt to the county of Blankenburg. |
| Günther IX [bg] | | c.1270? Third son ofGünther VI [bg] andSophia of Lüchow | 1289-1332/3 | Matilda of Regenstein between 5 June and 29 July 1312 four children | 1332/3 aged 62–63? |
| Günther X | | c.1270? Fourth son ofGünther VI [bg] andSophia of Lüchow | 1289-1295 | Unmarried | 1295 aged 24–25? |
| Otto | | c.1270? Second son ofGünther VI [bg] andSophia of Lüchow | 1289-1306 | County of Arnstadt (half 1) | 1306 aged 35–36? |
| Half 1 of Arnstadt annexed to Blankenburg |
| Günther VI [bg][18] | | c.1250 First son ofGünther V [bg] and Irmgard | 1292/3 – 24 October 1308 | County of Schwarzburg | Matilda of Käfernburg before 21 August 1301 eleven children | 24 October 1308 aged 57–58? | Sons of Günther V, received jointly their inheritance. It's possible that they co-ruled with their father prior to his death, possibly since c.1270. |
| Henry V [bg][18] | | c.1250 Second son ofGünther V [bg] and Irmgard | 1292/3-1293 | Oda of Henneberg-Hartenberg two children | 1293 aged 42–43? |
| John I | | c.1250 Third son ofGünther V [bg] and Irmgard | 1292/3-1303 | Unmarried | 1303 aged 52–53? |
| Adelaide | | c.1275? First daughter ofGünther VII [bg] andAdelaide of Schwarzburg | 10 June 1302 – 1305 | County of Arnstadt (half 2.1) | Otto V, Count of Weimar-Orlamünde [de] 1296 one child | 1305 aged 29–30 | Daughters of Gunther VII, divided their inheritance. Possibly inherited their parts of Arnstadt jointly with their husbands. |
| Irmgard | | 1282 Second daughter ofGünther VII [bg] andAdelaide of Schwarzburg | 10 June 1302 – 1315 | County of Arnstadt (half 2.2) | Henry II, Count of Hohnstein before 1302 five children | 1315 aged 32–33 |
| Arnstadt half 2.1 annexed to theHohnstein family; Arnstadt half 2.2 annexed to the County of Weimar-Orlamunde |
| Günther VIII | | c.1290 First son ofGünther VI [bg] andMatilda of Käfernburg | 1308-1320 | County of Schwarzburg | Unmarried | 1320 aged 29–30? | After his childless death, his brothers divided the county. |
| Matilda | | c.1270? Daughter ofFrederick andElisabeth of Neuenburg | 1312-1338 | County of Wiehe | Herman IV, Count of Weimar-Orlamünde [de] 1290 nine children | 1338 aged 67–68? | After her death the county passed to the county of Weimar-Orlamünde. |
| In 1338 Wiehe was annexed to Weimar-Orlamünde |
| Henry VIII [bg][19] | | c.1290 Second son ofGünther VI [bg] andMatilda of Käfernburg | 1320-1354/5 | County of Leutenberg (with Schwarzburghalf 1) | Helena of Holstein-Pinneberg ten children
Helena of Nuremberg [bg] before 27 January 1346 one child | 1354/5 aged 64–65 | Brothers of Günther VIII, ruled jointly possibly until 1326, when they received Leutenberg from their kin Günther VII. A division of the inheritance is then made. |
| Günther X [bg][19] | | c.1305? Third son ofGünther VI [bg] andMatilda of Käfernburg | 1320-1358 | County of Wachsenburg (with Schwarzburghalf 2) | Richeza of Schlüsselberg before 24 November 1326 six children | 1358 aged 52–53 |
| Henry VII[19] | | c.1290 Second son ofHenry VI andChristina of Gleichen-Tonna | 11 November 1324 – 1338 | County of Blankenburg | Elisabeth of Weimar-Orlamünde before 5 June 1321 five children | 1338 aged 47–48 | Children of Henry VI, ruled jointly until 1326, when they divided their inheritance. It's possible that they had already co-ruled jointly with their father at least since 1320. Gunther IX was also elected inFrankfurt am Main asKing of Germany by four Electors who opposed Charles of Luxembourg, who would be later elected asCharles IV, Holy Roman Emperor. |
| Günther IX[19] |  | 1303 Blankenburg Third son ofHenry VI andChristina of Gleichen-Tonna | 11 November 1324 – 18 June 1349 | County of Arnstadt[20] | Elisabeth of Hohnstein before 9 September 1331 five children | 18 June 1349 Frankfurt am Main aged 45–46 |
| Ludolf V | | c.1290? First son ofGerhard I | 1326-1358/61 | County of Hallermund (half 2) | Unknown four children | 1358/61 aged 68–71? | Children of Gerhard I, ruled jointly. Ludolf V was the only one of this branch who had descendants. Ludolf's children, (Henry II,Gerhard V andLudolf VI) are only documented in 1366, but are not known as counts. If they did not succeed their father Ludolf V in the co-rulership, the two halves of Hallermund were reunited after Henry I's abdication in 1384. |
| Gerhard III | | c.1290? Second son ofGerhard I | 1326-c.1340 | Unmarried | c.1340? aged 49–50? |
| Henry I | | c.1315? First son ofGerhard I andGerburg of Homburg | 1326-c.1384 | c.1400 aged 84–85? |
| Otto I | | c.1315? Second son ofGerhard I andGerburg of Homburg | 1326-1361 | 1361 aged 45–46 |
| Günther XIthe Elder [bg] | | c.1300? Son ofGünther VIII [bg] andIrmgard of Schwarzburg | 1332/3-1371 | County of Käfernburg | Loretta of Eppstein before 9 November 1341 seven children
Irmgard of Weimar-Orlamünde 1364 no children | 1371 aged 70–71? | Cousins, ruled jointly. |
| Günther XIIthe Younger | | c.1300? Son ofGünther IX [bg] andMatilda of Regenstein | 1332/3-1341 | Agnes no children | 1341 aged 40–41? |
| Henry IX [bg] | | 1325 First son ofHenry VII andElisabeth of Weimar-Orlamünde | 1338-1372/3 | County of Blankenburg | Agnes of Hohnstein-Sondershausen [bg] 24 February 1338 eight children | 1372/3 aged 47–48 | Sons of Henry VII, divided their inheritance. |
| Günther XI [bg] | | 9 September 1331 Second son ofHenry VII andElisabeth of Weimar-Orlamünde | 1338 – 6 June 1368 | County of Sondershausen | Elisabeth of Hohnstein-Sondershausen [bg] before 11 June 1347 three children | 6 June 1368 aged 36 |
| Wilbrand V | | c.1320? First son ofGerhard II andElisabeth of Everstein-Polle | c.1340-1375 | County of Hallermund (half 1 until 1384; both halves since 1384) | Unmarried | 1377 aged 56–57? | Children of Gerhard II, ruled jointly. In 1384, the county of Hallermund was reunited. Wilbrand possibly abdicated to becomeArchdeacon atElze. |
| Otto II | | c.1320? Second son ofGerhard II andElisabeth of Everstein-Polle | 1345/6-1392 | Adelaide of the Mark 15 March 1332 three children | 1392 aged 71–72? |
| Gerhard IV | | c.1320? Third son ofGerhard II andElisabeth of Everstein-Polle | c.1345-c.1380 | Unmarried | c.1380 aged 59–60? |
| Regency ofElisabeth of Hohnstein (1349-1353) | After his death Arnstadt reverted to Blankenburg. |
| Henry X [nl] | | 1339 Son ofGünther IX andElisabeth of Hohnstein | 18 June 1349 – November 1357 | County of Arnstadt | Unmarried | November 1357 aged 17–18 |
| In 1357, Arnstadt rejoined Blankenburg |
| Günther XII [bg] | | 1322 First son ofHenry VIII [bg] andHelena of Holstein-Pinneberg | 1354/55 – 4 July 1382 | County of Schwarzburg (half 1) | Magdalena Reuss of Plauen one child
Gertrude of Anhalt-Bernburg before 12 August 1371 two children | 4 July 1382[21] aged 59–60 | Sons of Henry VIII, divided their inheritance |
| Henry XI [bg] | | c.1340? Second son ofHenry VIII [bg] andHelena of Nuremberg [bg] | 1354/55-1402 | County of Leutenberg | Anna Reuss of Plauen 1373 one child | 1402 aged 61–62? |
| Günther XIII [bg] | | c.1320? First son ofGünther X [bg] andRicheza of Schlüsselberg | 1358-1362 | County of Wachsenburg | Adelaide of Hohenlohe-Uffenheim 1357 two children | 1362 aged 41–42? | Children of Günther X, Günther XIII and John II divided their inheritance. Some of John II's children did not survive him, but as they are counted as rulers, it is possible that they co-ruled with him in his part of the inheritance. |
| John II [bg] | | 1327 Second son ofGünther X [bg] andRicheza of Schlüsselberg | 1358-1407 | County of Schwarzburg (half 2) | Richeza of Henneberg-Hartenberg July 1358 seven children
Sophia of Schwarzburg-Blankenburg no children | February/May 1407 aged 79–80 |
| Günther XVII [bg][22] | | c.1340 First son ofJohn II [bg] andRicheza of Henneberg-Hartenberg | 1373-1395/6 | Judith of Schwarzburg-Blankenburg 1375 four children | 1395/6 aged 54–56 |
| Henry XV[23] | | c.1340 Second son ofJohn II [bg] andRicheza of Henneberg-Hartenberg | 1373-1395 | Unmarried | 1395 aged 54–55 |
| Balthasar I | | c.1340 Fourth son ofJohn II [bg] andRicheza of Henneberg-Hartenberg | 1373-1396 | 1396 aged 55–56 |
| Günther XV[22] | | c.1340 Son ofGünther XIII [bg] andAdelaide of Hohenlohe-Uffenheim | 1362-1397 | County of Wachsenburg | Unmarried | 1397 aged 56–57? | As he died childless, he left Wachsenburg to his cousin Henry XVII, son of Gunther XVII. |
| George [bg] | | c.1330? First son ofGünther XI [bg] andLoretta of Eppstein | 1371-1376 | County of Käfernburg (atIlmenau) | Sophia of Schwarzburg-Blankenburg 1353 three children | 1376 aged 45–46? | George and Günther XIII ruled jointly at first, and after George's death, his son Günther XIV replaced his role in the co-rulership. |
| Günther XIII | | c.1330? Second son ofGünther XI [bg] andLoretta of Eppstein | 1371-1386 | County of Käfernburg (atHermannstein) | Unmarried | 1386 aged 45–46? |
| In 1386, Hermannstein was possibly annexed by theMargraviate of Meissen |
| Henry XII[23] | | 1339 Second son ofHenry IX [bg] andAgnes of Hohnstein-Sondershausen [bg] | 1373 | County of Blankenburg | Unmarried | 1373 aged 33–34 | Sons of Henry IX, divided their inheritance after possibly co-ruling with their father. They died without male descendants and were succeeded by their cousins from Sondershausen. |
| Henry XIII [bg][23] | | c.1340 Third son ofHenry IX [bg] andAgnes of Hohnstein-Sondershausen [bg] | 1373-c.1390 | Unknown no children
Agnes Reuss of Gera no children | c.1390 aged 49–50 |
| Günther XIV [bg][22] | | c.1340? Fourth son ofHenry IX [bg] andAgnes of Hohnstein-Sondershausen [bg] | 1373 – 30 April 1418 | County of Arnstadt | Helena of Schwarzburg-Leutenberg two children
Margaret of Henneberg-Schleusingen 23 January 1399 no children | 30 April 1418 Lake Constance aged 77–78 |
| In 1418, Arnstadt was re-annexed to Blankenburg |
| Günther XIVthe Younger [bg] | | c.1355 Son ofGeorge [bg] andSophia of Schwarzburg-Blankenburg | 1376-1385 | County of Käfernburg (atIlmenau) | Matilda of Mansfeld 21 August 1379 no children
Agnes of Querfurt no children | 1385 Mount Sinai aged 29–30 | Died inpilgrimage toJerusalem. |
| In 1385, Käfernburg was annexed by theMargraviate of Meissen |
| Günther XVIII[22] | | c.1340? Son ofGünther XII [bg] andMagdalena Reuss of Plauen | 4 July 1382 – 1397/9 | County of Schwarzburg (half 1) | Anna of Falkenstein [de] 28 August 1390 two children | 1397/9 aged 57–59? | Left no male descendants, and the county was re-annexed to Leutenberg. |
| Schwarzburg half 1 rejoined Leutenberg |
| Henry XIV[23] | | 1350 First son ofGünther XI [bg] andElisabeth of Hohnstein-Sondershausen [bg] | 6 June 1368 – c.1390 | County of Sondershausen | Unmarried | 1413 aged 62–63 | Sons of Günther XI from Sondershausen, Henry XIV and Günther XVI inherited the rule of Blankenburg and integrated Sonderhausen in it. Later Günther XVI associated Henry XVIII to the co-rulership. |
| c.1390-1413 | County of Blankenburg |
| Günther XVI [de][22] | | 1352 Second son ofGünther XI [bg] andElisabeth of Hohnstein-Sondershausen [bg] | 6 June 1368 – c.1390 | County of Sondershausen | Anna of Leuchtenberg (1354-24 January 1423) before 20 January 1375 three children | 17 July 1416 Arnstadt aged 63–64 |
| c.1390 – 17 July 1416 | County of Blankenburg |
| Henry XVIIIthe Younger [bg][23] | | c.1370 First son ofGünther XVI [de] andAnna of Leuchtenberg | c.1400 – 10 October 1410 | Elisabeth of Weimar-Orlamünde no children | 10 October 1410 aged 39–40 |
| Sondershausen rejoined Blankenburg |
| Otto III | | c.1350? Son ofOtto II andAdelaide of the Mark | 1392-1411 | County of Hallermund | Elisabeth no children | 1411/2 aged 61–62? | In 1411, endebted, sold the county to thePrincipality of Brunswick-Wolfenbüttel, and died not long after. |
| In 1411 Hallermund was sold to the Principality of Brunswick-Wolfenbüttel |
| Henry XVII [bg][23] | | c.1380 First son ofGünther XVII [bg] andJudith of Schwarzburg-Blankenburg | 1397-1406 | County of Wachsenburg | Margaret of Hohenlohe-Brauneck 29 October 1398 no children | 1406 aged 25-26 | Son of Gunther XVII from Schwarzburg half 1, inherited Wachsenburg from his cousin Gunther XV. |
| In 1406 Wachsenburg was annexed to Blankenburg |
| Anna Reuss of Plauen | | 1354 Daughter ofHenry VI, Lord of Reuss-Plauen [bg] andLuitgard of Kranichfeld | 1402-1410 | County of Leutenberg (atRemda) | Henry XI [bg] 1373 one child | 1410 aged 55–56 | Ruled jointly. After Anna's death, Henry XVI (who may have been co-ruling with his father since at least the 1390s), inherited her feud at Remda. Albert I was acanon atKöln and then atWürzburg, and maybe had to abdicate before entering into clergy. |
| Henry XVI [bg][23] | | 1375 First son ofHenry XI [bg] andAnna Reuss of Plauen | 1402-1426 | County of Leutenberg | Margaret one child
Elisabeth of Weimar-Orlamünde one child | 1426 aged 50–51 |
| Albert I | | c.1375? Second son ofHenry XI [bg] andAnna Reuss of Plauen | 1402-1411 | Unmarried | 15 July 1421 aged 45–46? |
| Albert II | | c.1375? Fourth son ofHenry XI [bg] andAnna Reuss of Plauen | 1402-1431 | 1431 aged 55–56? |
| Günther XIX [bg] | | c.1380 Second son ofGünther XVII [bg] andJudith of Schwarzburg-Blankenburg | 1407-1450 | County of Schwarzburg (half 2) | Matilda of Henneberg-Schleusingen [bg] 16 November 1407 three children
Catharina of Schönburg-Glauchau 18 February 1453 no children | 1450 aged 69–70 | Son of Gunther XVII, inherited his half of Schwarzburg directly from his grandfather John II, as his father and uncles predeceased him. After his death, most of his half of Schwarzburg was annexed to Blankenburg. |
| In 1450 Schwarzburg half 2 (with exceptions) was annexed to Blankenburg |
| Henry XIX [bg] | the Bellicose | 1388 Blankenburg Second son ofGünther XVI [de] andAnna of Leuchtenberg | 17 July 1416 – 7 October 1444 | County of Blankenburg | Catharina of Brunswick-Wolfenbüttel [bg] 1413 three children | 7 October 1444 Arnstadt aged 55–56 | |
| Henry XX [bg] | | 1412 Son ofHenry XVI [bg] andElisabeth of Weimar-Orlamünde | 1431-1462/4 | County of Leutenberg | Brigitte Reuss of Gera 1443 three children | 1462/4 Leutenberg aged 49–52 | |
| Henry XXI [nl] | | 23 October 1418 Son ofHenry XIX [bg] andCatharina of Brunswick-Wolfenbüttel [bg] | 7 October 1444 – 13 January 1488 | County of Blankenburg | Elisabeth of Clèves 15 July 1434 eleven children | 13 January 1488 aged 69 | Possibly abdicated from Arnstadt and Sondershausen for his eldest children. |
| Ursula | | c.1410 Daughter ofGünther XIX [bg] andMatilda of Henneberg-Schleusingen [bg] | 1450-1461 | County of Schwarzburg (half 2, atEhrenstein) | Gebhard V, Count of Mansfeld [bg] 1428 two children
Louis, Count of Gleichen-Blankenhein [bg] 1442 one child | 1461 aged 50–51 | Inherited Ehrenstein from her father. After her death, Ehrenstein was annexed to Mansfeld. |
| In 1461 Ehrenstein was annexed to theHouse of Mansfeld |
| Regency ofBrigitte Reuss of Gera (1462/4-1473) | |
| Balthasar II [bg] | | 1453 Son ofHenry XX [bg] andBrigitte Reuss of Gera | 1462/4 – 18 June 1525 | County of Leutenberg | Anna Sack 1494 two children | 18 June 1525 aged 71–72 |
| Günther XX 'the Elder [nl] | ' | 8 July 1439 First son ofHenry XXI [nl] andElisabeth of Clèves | 1476 – 30 December 1503 | County of Arnstadt | Margaret of Henneberg-Schleusingen 22/29 October 1458 Arnstadt two children | 30 December 1503 Rudolstadt aged 64 | Elder sons of Henry XXI, possibly ruled in separate feuds created by their father. Gunther XX had no children, and his estate came into possession of his brother. Gunther XXI. |
| Günther XXIthe Middle [nl] | | 1450 Rudolstadt Second son ofHenry XXI [nl] andElisabeth of Clèves | 1476 – 19 November 1484 | County of Sondershausen | Catharina of Querfurt 1470 four children | 19 November 1484 Delmenhorst aged 33–34 |
| In 1503 Arnstadt was briefly annexed to Sondershausen |
| Regency ofGünther XX, Count of Arnstadt [nl], (1484-1487) | |
| Henry XXII [nl] | | November 1473 Son ofGünther XXI [nl] andCatharina of Querfurt | 19 November 1484 – 4 August 1526 | County of Sondershausen | Magdalena of Hohnstein 1449 four children
Anna of Nassau-Idstein 19 August 1506 one child | 4 August 1526 Nordhausen aged 52 |
| Günther XXII [nl] | of Bremen | 30 May 1455 Third son ofHenry XXI [nl] andElisabeth of Clèves | 13 January 1488 – 8 August 1531 | County of Blankenburg | Amalia of Mansfeld 3 November 1493 Sondershausen three children | 8 August 1531 aged 75–76 | Younger son of Henry XXI, inherited his father's main possessions in Blankenburg. |
| John Henry, Count of Schwarzburg-Leutenberg [bg] | | 1496 Son ofBalthasar II [bg] andAnna Sack | 18 June 1525 – 14 March 1555 | County of Leutenberg | Margaret Reuss of Weida 13 January 1527 nine children | 14 March 1555 Glauchau aged 58–59 | |
| Günther XXIIIthe Rich |  | 31 October 1499 Sondershausen Son ofHenry XXII [nl] andMagdalena of Hohnstein | 4 August 1526 – 10 November 1552 | County of Arnstadt | Elisabeth of Isenburg-Ronneburg [bg] 29 November 1528 Sondershausen three children | 10 November 1552 Gehren aged 53 | Children of Henry XXII, divided their inheritance. In 1537 Gunther inherited his childless brother's possessions in Sondershausen, and in the next year his cousin's at Blankenburg. |
| Henry XXIVthe Younger [nl][24] | | 7 August 1507 Sondershausen Son ofHenry XXII [nl] andAnna of Nassau-Idstein | 4 August 1526 – 10 January 1537 | County of Sondershausen | Margaret of Schönberg 4/17 March 1531 Dresden no children | 10 January 1537 Frankenhausen aged 29 |
| In 1537 Sondershausen was annexed to Arnstadt |
| Henry XXIIIThe Reformer [nl][24] |  | 23 March 1499 Son ofGünther XXII [nl] andAmalia of Mansfeld | 8 August 1531 – 12 July 1538 | County of Blankenburg | Catharina of Henneberg-Schleusingen,the Heroic [de] 14 November 1524 six children | 12 July 1538 aged 39 | Son of Günther XXII. Left no male descendants, and his possessions were inherited by Arnstadt. |
| In 1538 Blankenburg was annexed to Arnstadt |
| Regency ofMargaret Reuss of Weida (1555-1559) | His childless death allowed the Arnstadt branch to reunify the remnants of the old county of Schwarzburg. |
| Philip I [bg] | | 1540 Son ofJohn Henry, Count of Schwarzburg-Leutenberg [bg] andMargaret Reuss of Weida | 14 March 1555 – 8 October 1564 | County of Leutenberg | Catharina of Brunswick-Grubenhagen 4 December 1559 Saalfeld no children | 8 October 1564 Leipzig aged 23–24 |
| In 1564 Leutenberg was annexed to Arnstadt |
| Günther XXIVthe Bellicose |  | 25 September 1529 Sondershausen First son ofGünther XXIII andElisabeth of Isenburg-Ronneburg [bg] | 10 November 1552 – 1564 | County of Arnstadt | Catherine of Nassau-Dillenburg 17 November 1560 Arnstadt three children | 23 May 1583 Antwerp aged 53 | Children of Günther XXIII. Günther XXIV inherited alone his father's possessions centered at Arnstadt. In 1564 briefly reunited Schwarzburg, and seven years later redivided it between himself and his brothers. As Gunther himself left no descendants, his domains were absorbed by Sondershausen. The same happened to William, who inherited Frankenhausen and also left no children. Frankenhausen was absorbed by Rudolstadt |
| 8 October 1564 – 1571 | County of Schwarzburg |
| 1571 – 23 May 1583 | County of Arnstadt |
| Arnstadt was annexed to Sonderhausen |
| John Günther I |  | 20 December 1532 Sondershausen Second son ofGünther XXIII andElisabeth of Isenburg-Ronneburg [bg] | 1571 – 28 October 1586 | County of Sondershausen | Anna of Oldenburg [bg] 16 February 1566 Sondershausen twelve children | 28 October 1586 Arnstadt aged 53 |
| William |  | 4 October 1534 Sondershausen Third son ofGünther XXIII andElisabeth of Isenburg-Ronneburg [bg] | 1571 – 30 September 1598 | County of Frankenhausen | Elisabeth of Schlick 6 April 1567 Frankenhausen no children
Clara of Brunswick-Lüneburg 7 March 1593 Frankenhausen no children | 30 September 1598 Straussberg [de] aged 63 |
| Frankenhausen was annexed to Rudolstadt |
| Albert III |  | 16 January 1537 Sondershausen Second son ofGünther XXIII andElisabeth of Isenburg-Ronneburg [bg] | 1571 – 10 April 1605 | County of Rudolstadt | Juliana of Nassau-Siegen 14 June 1575 Rudolstadt ten children
Albertine Elisabeth of Leiningen-Westerburg 2 March 1591 Rudolstadt no children | 10 April 1605 Rudolstadt aged 68 |
| Günther XXV [de] | | 7 September 1570 Sondershausen First son ofJohn Günther I andAnna of Oldenburg [bg] | 28 October 1586 – 7 January 1643 | County of Sondershausen | Unmarried | 7 January 1643 Sondershausen aged 72 | Sons of John Günther I, ruled jointly. |
| Anton Henry | | 7 October 1571 Sondershausen Second son ofJohn Günther I andAnna of Oldenburg [bg] | 28 October 1586 – 10 August 1638 | 10 August 1638 Sondershausen aged 66 |
| John Günther II [de] | | 3 May 1577 Sondershausen Third son ofJohn Günther I andAnna of Oldenburg [bg] | 28 October 1586 – 16 December 1631 | 16 December 1631 Sondershausen aged 54 |
| Christian Günther I | | 11 May 1578 Sondershausen Fourth son ofJohn Günther I andAnna of Oldenburg [bg] | 28 October 1586 – 25 November 1642 | Anna Sibylle of Schwarzburg-Rudolstadt [bg] 15 November 1612 Sondershausen nine children | 25 November 1642 Arnstadt aged 64 |
| Charles Güntherthe Multiplier[25] |  | 6 November 1576 Rudolstadt First son ofAlbert III andJuliana of Nassau-Siegen | 10 April 1605 – 24 September 1630 | County of Rudolstadt | Anna Sophie of Anhalt 13 June 1611 Rudolstadt no children | 24 September 1630 Kranichfeld aged 53 | Sons of Albert III, ruled jointly. |
| Louis Günther Ithe Strong[25] |  | 27 June 1581 Rudolstadt Second son ofAlbert III andJuliana of Nassau-Siegen | 10 April 1605 – 4 November 1646 | Emilie of Oldenburg-Delmenhorst 4 February 1638 Rudolstadt five children | 4 November 1646 Rudolstadt aged 65 |
| Albert Günther [fr] |  | 8 August 1582 Rudolstadt Third son ofAlbert III andJuliana of Nassau-Siegen | 10 April 1605 – 20 January 1634 | Unmarried | 20 January 1634 Erfurt aged 52 |
| Christian Günther IIthe Pious | | 1 April 1616 Ebeleben Second son ofChristian Günther I andAnna Sibylle of Schwarzburg-Rudolstadt [bg] | 7 January 1643 – 10 September 1666 | County of Arnstadt | Sophia Dorothea of Mörsperg-Beffort 1645 Arnstadt six children | 10 September 1666 Arnstadt aged 50 | Children of Christian Günther I, divided their inheritance.Ebeleben returned to Sondershausen after Louis Gunther's death. |
| Anton Günther I | | 9 January 1620 Ebeleben Third son ofChristian Günther I andAnna Sibylle of Schwarzburg-Rudolstadt [bg] | 7 January 1643 – 19 August 1666 | County of Sondershausen | Maria Magdalene of Palatinate-Birkenfeld [fr] 29 October 1644 Sondershausen ten children | 19 August 1666 Ebeleben aged 46 |
| Louis Günther II | | 2 March 1621 Ebeleben Fourth son ofChristian Günther I andAnna Sibylle of Schwarzburg-Rudolstadt [bg] | 7 January 1643 – 20 July 1681 | County of Sondershausen (atEbeleben) | Concordia of Sayn-Wittgenstein [bg] 30 March 1669 Ebeleben two children | 20 July 1681 Arnstadt aged 60 |
| In 1681 Ebeleben was annexed again to Sondershausen |
| Regency ofEmilie of Oldenburg-Delmenhorst (1646-1662) | He was elevated twice to anImperial Prince, but only accepted the second proposal, at the end of his reign (1710). The County evolved into a Principality. |
| Albert Anton |  | 14 November 1641 Rudolstadt Son ofLouis Günther I andEmilie of Oldenburg-Delmenhorst | 4 November 1646 – 15 December 1710 | County of Rudolstadt (until 1710)
Principality of Rudolstadt (from 1710) | Emilie Juliane of Barby-Mühlingen 7 July 1665 Rudolstadt two children | 15 December 1710 Rudolstadt aged 69 |
| Regency ofSophia Dorothea of Mörsperg-Beffort (1666-1668) | Died without descendants. The county passed to his cousin, Anton Günther II. |
| John Günther III [nl] | | 30 June 1654 Son ofChristian Günther II andSophia Dorothea of Mörsperg-Beffort | 10 September 1666 – 29 August 1669 | County of Arnstadt | Unmarried | 29 August 1669 aged 15 |
| Christian William |  | 6 January 1647 Sondershausen First son ofAnton Günther I andMaria Magdalene of Palatinate-Birkenfeld [fr] | 19 August 1666 – 10 May 1721 | County of Sondershausen (until 1697)
Principality of Sondershausen (from 1697) | Antonia Sybilla of Barby-Mühlingen [fr] 22 August 1673 Sondershausen seven children
Wilhelmine Christiane of Saxe-Weimar [fr] 1684 Sondershausen eight children | 10 May 1721 Sondershausen aged 74 | Inherited Sondershausen from his father, in 1681 Eberleben from his uncle Louis Günther II, and in 1716, Arnstadt from his brother. In 1697 he was raised toImperial Prince. |
| Anton Günther II |  | 10 October 1653 Sondershausen Second son ofAnton Günther I andMaria Magdalene of Palatinate-Birkenfeld [fr] | 29 August 1669 – 20 December 1716 | County of Arnstadt (until 1697)
Principality of Arnstadt (from 1697) | Augusta Dorothea of Brunswick-Wolfenbüttel 7 August 1684 Wolfenbüttel no children | 20 December 1716 Arnstadt aged 63 | Inherited Arnstadt from his cousin. In 1697 he was raised toImperial Prince. However, left no descendants. The Principality returned to Sondershausen |
| In 1716 Arnstadt was annexed again to Sondershausen |
| Louis Frederick I |  | 25 October 1667 Rudolstadt Son ofAlbert Anton andEmilie Juliane of Barby-Mühlingen | 15 December 1710 – 24 June 1718 | Principality of Rudolstadt | Anna Sophie of Saxe-Gotha-Altenburg 15 October 1691 Gotha thirteen children | 24 June 1718 Rudolstadt aged 50 | |
| Frederick Anton |  | 14 October 1692 Rudolstadt First son ofLouis Frederick I andAnna Sophie of Saxe-Gotha-Altenburg | 24 June 1718 – 1 September 1744 | Principality of Rudolstadt | Sophia Wilhelmina of Saxe-Coburg-Saalfeld 8 February 1720 Saalfeld three children
Sophia Christina of East Frisia [de] 6 January 1729 Rudolstadt no children | 1 September 1744 Rudolstadt aged 51 | |
| Günther XXVI |  | 13 August 1678 Auleben Third son ofChristian William andAntonia Sybilla of Barby-Mühlingen [fr] | 10 May 1721 – 28 November 1740 | Principality of Sondershausen | Elisabeth Albertine of Anhalt-Bernburg [de] 2 October 1712 Sondershausen no children | 28 November 1740 Sondershausen aged 62 | Left no descendants. The Principality passed to his half-brother, Henry. |
| Henry XXVthe Diamond Prince |  | 8 November 1689 Sondershausen First son ofChristian William andWilhelmine Christiane of Saxe-Weimar [fr] | 28 November 1740 – 6 November 1758 | Principality of Sondershausen | Unmarried | 6 November 1758 Frankfurt am Main aged 68 | Left no descendants. The Principality passed to his nephew, Christian Günther III, son of his brother August. |
| John Frederick |  | 8 January 1721 Rudolstadt Son ofFrederick Anton andSophia Wilhelmina of Saxe-Coburg-Saalfeld | 1 September 1744 – 10 July 1767 | Principality of Rudolstadt | Bernardina Christina Sophia of Saxe-Weimar-Eisenach 19 November 1744 Eisenach six children | 10 July 1767 Rudolstadt aged 46 | Left no male descendants. The principality passed to his uncle. |
| Christian Günther III |  | 24 June 1736 Ebeleben Son ofAugustus of Schwarzburg-Sondershausen [de] andCharlotte Sophie of Anhalt-Bernburg [fr] | 6 November 1758 – 14 October 1794 | Principality of Sondershausen | Charlotte Wilhelmine of Anhalt-Bernburg [fr] 4 February 1760 Sondershausen six children | 14 October 1794 Sondershausen aged 58 | Nephew of Günther XXVI and Henry XXV. |
| Louis Günther II |  | 22 October 1708 Rudolstadt Fourth son ofLouis Frederick I andAnna Sophie of Saxe-Gotha-Altenburg | 10 July 1767 – 29 August 1790 | Principality of Rudolstadt | Sophie Henrietta Reuss of Greiz [uk] 22 October 1733 Greiz four children | 29 August 1790 Rudolstadt aged 81 | Succeeded his nephew. |
| Frederick Charles |  | 7 June 1736 Rudolstadt Son ofLouis Günther II andSophie Henrietta Reuss of Greiz [uk] | 29 August 1790 – 13 April 1793 | Principality of Rudolstadt | Frederica Sophie Auguste of Schwarzburg-Rudolstadt [bg] 21 October 1763 Rudolstadt six children
Auguste Louise Frederica of Saxe-Gotha-Altenburg [it] 28 November 1780 Rudolstadt no children | 13 April 1793 Rudolstadt aged 56 | |
| Louis Frederick II |  | 9 August 1767 Rudolstadt Son ofFrederick Charles andFrederica Sophie Auguste of Schwarzburg-Rudolstadt [bg] | 13 April 1793 – 28 April 1807 | Principality of Rudolstadt | Caroline of Hesse-Homburg 21 June 1791 Homburg seven children | 28 April 1807 Rudolstadt aged 39 | |
| Günther Frederick Charles I |  | 5 December 1760 Sondershausen Son ofChristian Günther III andCharlotte Wilhelmine of Anhalt-Bernburg [fr] | 14 October 1794 – 19 August 1835 | Principality of Sondershausen | Caroline of Schwarzburg-Rudolstadt [uk] 23 June 1799 Sondershausen two children | 22 April 1837 Sondershausen aged 76 | Abdicated. |
| Regency ofCaroline of Hesse-Homburg (1807-1814) | He left no surviving legitimate children. The principality passed to his brother Albert. |
| Frederick Günther |  | 6 November 1793 Rudolstadt First son ofLouis Frederick II andCaroline of Hesse-Homburg | 28 April 1807 – 28 June 1867 | Principality of Rudolstadt | Auguste of Anhalt-Dessau 15 April 1816 Dessau three children
Helene of Reina (morganatic) 7 August 1855 Dresden two children
Maria Schultze (morganatic) 24 September 1861 Rudolstadt no children | 28 June 1867 Rudolstadt aged 73 |
| Günther Frederick Charles II |  | 24 September 1801 Sondershausen Son ofGünther Frederick Charles I andCaroline of Schwarzburg-Rudolstadt [uk] | 19 August 1835 – 17 July 1880 | Principality of Sondershausen | Irene Maria of Schwarzburg-Rudolstadt [uk] 12 March 1827 Sondershausen four children
Matilda of Hohenlohe-Öhringen [de] 29 May 1835 Öhringen two children | 15 September 1889 Sondershausen aged 87 | Abdicated due to an eye condition. |
| Albert IV |  | 30 April 1798 Rudolstadt Second son ofLouis Frederick II andCaroline of Hesse-Homburg | 28 June 1867 – 26 November 1869 | Principality of Rudolstadt | Augusta Louise of Solms-Braunfels [uk] 26 July 1827 Rudolstadt four children | 26 November 1869 Rudolstadt aged 71 | |
| George Albert |  | 23 November 1838 Rudolstadt Son ofAlbert IV andAugusta Louise of Solms-Braunfels [uk] | 28 November 1869 – 19 January 1890 | Principality of Rudolstadt | Unmarried | 19 January 1890 Rudolstadt aged 51 | Left no descendants. He was succeeded by his cousin, George Victor. |
| Charles Günther |  | 7 August 1830 Arnstadt Son ofGünther Frederick Charles II andIrene Maria of Schwarzburg-Rudolstadt [uk] | 17 July 1880 – 28 March 1909 | Principality of Sondershausen | Marie Gasparine of Saxe-Altenburg 12 June 1869 Altenburg no children | 28 March 1909 Dresden aged 78 | Left no descendants. After his death Sondershausen was annexed to Rudolstadt. |
| In 1909 Sondershausen was annexed to Rudolstadt |
| Günther Victor |  | 21 August 1852 Rudolstadt Son ofAdolph of Schwarzburg-Rudolstadt [de] andPrincess Mathilde of Schönburg-Waldenburg | 19 January 1890 – 28 March 1909 | Principality of Rudolstadt | Anna Louise of Schönburg-Waldenburg 9 December 1891 Rudolstadt no children | 16 April 1925 Sondershausen aged 72 | Great-grandson of Frederick Charles. In 1909 reunited the principalities of Rudolstadt and Sonderhausen. In 1918, following theGerman revolution, abdicated and became Titular Prince. |
| 28 March 1909 – 22 November 1918 | Principality of Schwarzburg |