Duchy of Silesia
The original Duchy stretched from Jawor on the Nysa Szalona River westwards along the northern slopes of the Western Sudetes to the Jizera Mountains and the Kwisa River, which formed the Silesian border with the former Milceni lands of Upper Lusatia. In the north it bordered the remaining Duchy of Legnica and in the east the Duchy of Silesia-Wrocław.