As shown below, this royal Luxembourg dynasty were not male-line descendants of the original counts ofLuxembourg. They descended instead from theHouse of Limburg-Arlon, who had beendukes of Lower Lorraine in the 11th century. In 1247Henry, younger son of DukeWaleran III of Limburg inherited theCounty of Luxembourg, becoming Count Henry V of Luxembourg, upon the death of his mother CountessErmesinde. Her father,Count Henry "the Blind", was count of Namur through his father, and count of Luxembourg through his mother, who was also namedErmesinde. This elder Ermesinde was a member of the original House of Luxembourg, which was a branch of theHouse of Ardenne, and had ruled Luxembourg since the late 10th century.
There were two other houses descended from the women of the counts of Luxembourg as shown in the family tree in theHouse of Ardenne–Luxembourg: theCounts of Loon, the Counts ofGrandpré, along with theDukes of Limburg. All three families had a place in relation to the succession of theHouse of Ardennes. Indeed, the Count of Grandpré was the next heir ofConrad II of Luxembourg, who was the last representative of the Ardennes dynasty. But, EmperorFrederick II preferred that Luxembourg was held by a lord Germanic rather than French and attributed the county toHenry of Limburg-Arlon (see below), son of Conrad's aunt Ermesinde and CountGodfrey I of Namur. The Counts of Loon are also in position to claim the inheritance Luxembourg, albeit weaker position.
Henry arranged the marriage of his sonJohn with thePřemyslid heiressElisabeth of Bohemia in 1310, through whom the House of Luxembourg acquired theKingdom of Bohemia, enabling that family to compete more effectively for power with the Habsburg and Wittelsbach dynasties. One year after being crownedHoly Roman Emperor at Rome, Henry VII, still on campaign in Italy, died in 1313.
Theprince-electors, perturbed by the rise of the Luxembourgs, disregarded the claims raised by Henry's heir King John, and the rule over the Empire was assumed by the Wittelsbach dukeLouis of Bavaria. John instead concentrated on securing his rule in Bohemia and graduallyvassalized thePiast dukes of adjacentSilesia from 1327 until 1335. His sonCharles IV acceded to the Imperial throne in 1346. HisGolden Bull of 1356 served as a constitution of the Empire for centuries. Charles not only acquired the duchies ofBrabant andLimburg in the west, but also the formerMarch of Lusatia and even theMargraviate of Brandenburg in 1373 under theKingdom of Bohemia.
The family's decline began under Charles' son KingWenceslaus, deposed by the prince-electors in 1400 who chose the Wittelsbach Elector PalatineRupert. In 1410 rule was assumed by Wenceslaus' brotherSigismund, who once again stabilized the rule of the Luxembourgs and even contributed to end theWestern Schism in 1417; however, with his death in 1437, the senior branch of the dynasty became extinct. He was succeeded by his son-in-law, the Habsburg archdukeAlbert V of Austria. TheHabsburgs finally prevailed as Luxembourg heirs, ruling the Empire until the extinction of their senior branch upon the death ofMaria Theresa in 1780.
John the Blind (1296–1346) – only son of Henry. He wasenfeoffed with Bohemia by his father in 1310, married the Přemyslid heiress Elisabeth of Bohemia and deposed the Bohemian kingHenry the Carinthian.
Charles IV (1316–1378) — eldest son of John. He was elected king of Germany in opposition to Louis IV in 1346 and succeeded his father as king of Bohemia in the same year, crowned emperor in 1355.
Wenceslaus (1361–1419) – eldest surviving son of Charles. Asmargrave of Brandenburg from 1373 to 1378, he was elected king of Germany in 1376 and succeeded his father as king of Bohemia in 1378. Declared deposed by the prince-electors in 1400, he was succeeded byRupert of Wittelsbach.
Sigismund (1368–1437) – younger son of Charles. Margrave of Brandenburg from 1378 to 1388, he wasking of Hungary andCroatia from 1387 in right of his wifeMary, and was elected king of Germany in 1411,[1] succeeding his brother as king of Bohemia in 1419, being crowned emperor in 1433 yet he left no male heirs.
Elizabeth of Luxembourg, only child of Emperor Sigismund, married ArchdukeAlbert V of Austria from theAlbertinian line of the House of Habsburg in 1422, becoming queen of Hungary from 1437 as well asqueen of Germany and Bohemia from 1438 until Albert's death in 1439. She was the heiress who conveyed the major portion of the Luxembourg inheritance to the Habsburgs and, later, theJagiellons through her daughterElisabeth of Austria.
Having succeeded to the county of Luxemburg, the younger branch of theHouse of Limburg-Arlon is the family that succeeded in getting one of its scions elected Holy Roman Emperor. From there descended the Kings of Bohemia, several other Emperors and a King of Hungary as shown below.
The royal House of Luxemburg are named after their ancestors in the Luxembourg branch of the earlierHouse of Ardenne (orArdennes, FrenchMaison d'Ardenne). This was an important noble family fromLotharingia, known from at least the tenth century. They had several important branches, descended from several brothers:[2]
^Parisse, ‘Généalogie de la Maison d'Ardenne’, La maison d'Ardenne Xe-XIe siècles. Actes des Journées Lotharingiennes, 24 - 26 oct. 1980, Centre Univ., Sht Luxembourg, (1981) 9-41