Duchy of Oels

Duchy of Oleśnica
Księstwo Oleśnickie (Polish)
Herzogtum Oels (German)
Olešnické knížectví (Czech)
1313–1884
Silesia 1312-1317: Creation of the Duchy of Olésnica (blue, north) for Bolesław in 1313
StatusDistrict duchy of Poland
Silesian duchy
Fief of the Bohemian Crown (13291480, 14901742)
Fief of Hungary (14801490)
Part of Prussia (from 1742)
CapitalOleśnica
Historical eraMiddle Ages
Early modern period
 Partitioned from Głogów
1313
 Vassalized by Bohemia
1329
 Bierutów split off
1412
 Vassal of Hungary
1480
 Vassal of Bohemia
1490
 Henry of Poděbrady duke
1495
 Silvius Nimrod of Württemberg duke
1649
 Frederick Augustus of Brunswick duke
1792
 Disestablishment
1884
Preceded by
Succeeded by
Duchy of Głogów
Kingdom of Prussia
Today part ofPoland

The Duchy of Oleśnica (Polish: Księstwo Oleśnickie, Latin: Ducatus Olsnensis) or Duchy of Oels (German: Herzogtum Oels) was one of the duchies of Silesia with its capital in Oleśnica in Lower Silesia, Poland. Initially ruled by the Silesian Piasts, it was acquired by the Münsterberg (Ziębice) dukes of the Podiebrad family from 1495 and was inherited by the House of Württemberg in 1649. Conquered by Prussia in 1742, it was enfeoffed to the Welf dukes of Brunswick-Lüneburg from 1792 until its dissolution in 1884.