ThePiast castle with a nearbyabbey and trading settlement was first mentioned in an 1189 deed. It was part of fragmentedPoland under thePiast dynasty. In 1255, it was grantedtown rights by DukeHenry III the White. From the 13th century onwards, the area was largely settled by Germans in the course of theOstsiedlung.[6] From the 13th century, it had acoin mint. In the 13th century Oleśnica was part of theDuchy of Silesia, in 1294 it became part of theDuchy of Głogów[7] and in 1313 it became capital of theDuchy of Oleśnica, just partitioned from Głogów. By that time a hospital already existed in Oleśnica, mentioned in a document from 1307.[7] From 1320/21 the formercastellany served as the residence of the Piast dukeKonrad I of Oleśnica; his son DukeKonrad II the Gray also inheritedKoźle. The dukes of Oleśnica in the 14th century still claimed to be heirs of the entire Kingdom of Poland, even though they ruled only in their principality, which caused animosity from other Polish dukes in Silesia and monarchs of all Poland.[7] Oleśnica was located on an important trade route which connected Wrocław with Kalisz and Toruń.[7]
In 1329, Duke Konrad I was forced to accept the overlordship of theBohemian (Czech) Crown, although he retained vast autonomy.[7] Local Polish dukes granted numerousprivileges to Oleśnica,[7] and the Duchy of Oleśnica was still ruled from the town until the 1492 death of DukeKonrad X the White, last of the local Piasts. During theHussite Wars, Oleśnica was invaded by the Hussites in 1432, and later Polish–Hussite negotiations took place there.[7] During theBohemian–Hungarian War local dukes switched sides several times. In 1469 they recognized the overlordship of KingMatthias Corvinus ofHungary, in the 1470s Duke Konrad X sided with Bohemian KingVladislaus Jagiellon, in 1480 he recognized Hungarian suzerainty again, and then revolted in 1489.[7] Afterwards it was again a Bohemianfief.
Dyszkurs o dobrych uczynkach byAdam Gdacius, published in Oleśnica in 1687
On September 11, 1535, a violent F4 tornado completely destroyed part of the town. The written account of this tornado was done by Dr. Alfred Wegener, which is in the CLIMDAT archive located atLeipzig University and the F4 rating on theFujita scale was assigned by theEuropean Severe Storms Laboratory.[8][9]
In the 17th century, the Polish-German language border ran close to Oleśnica, including the town to the territory dominated by the Polish language.[10] Polish religious writersAdam Gdacius (nicknamedRey of Silesia) and Jerzy Bock published their works in Oleśnica.[11]
AfterWorld War I, Oels was included within theProvince of Lower Silesia. Nazi Germany operated a prison in the town,[13] and aforced labour camp forItalian,English,Yugoslavian,Belgian andPolishprisoners of war duringWorld War II.[14] Dozens ofPolish resistance members, including women, were held in the local prison, and at least 14 were sentenced to death in the town in 1942.[15] The German administration evacuated almost the entire population, leaving only a few Germans and the forced laborers. The town was heavily damaged by theRed Army in 1945 in the final stages of World War II, having approximately 60-80% of its buildings destroyed. The city became part of Poland again after thePotsdam Conference under its historic Polish nameOleśnica. The remaining German-speaking population was subsequentlyexpelled in accordance to thePotsdam Agreement and the town wasresettled with Poles many of whom were expelled from formereastern Poland annexed in 1945 by theSoviet Union. Some 3,000 Italians remained in the town until the end of 1945, and organized artistic shows to which they invited young Polish activists.[16]
The majority of monuments in the Old Town have been rebuilt since the 1960s.
John, Duke of Münsterberg-Oels (1509–1565), Duke of the Münsterberg from 1542 to 1565, Duke of Oels from 1548 to 1565 and Duke of Bernstadt from 1548 to 1565
Christian Ulrich I, Duke of Württemberg-Oels (1652–1704), German nobleman, Duke of Württemberg-Bernstadt from 1669 to 1697 and Duke of Oels-Württemberg from 1697 until his death
^"Główny Urząd Statystyczny" [Central Statistical Office] (in Polish). To search: Select "Miejscowości (SIMC)" tab, select "fragment (min. 3 znaki)" (minimum 3 characters), enter town name in the field below, click "WYSZUKAJ" (Search).
^Dorota Borowicz,Mapy narodowościowe Górnego Śląska od połowy XIX wieku do II Wojny Światowej, Wydawnictwo Uniwersytetu Wrocławskiego, Wrocław, 2004, p. 33
^Wincenty Ogrodziński, Nauka domowa i wyjątki z Agendy, „Biblioteka pisarzy śląskich”, Katowice, 1936