シロンスク・ピャスト家
The Duchy of Żagań (, ) or Duchy of Sagan () was one of the duchies of Silesia ruled by the Silesian Piasts. Its capital was Żagań in Lower Silesia, the territory stretched to the town of Nowogród Bobrzański in the north and reached the Lusatian Neisse at Przewóz in the west, including two villages beyond the river (Pechern and Neudorf).