Konrad IV the Elder was Duke of Oels (Oleśnica), Koźle, half of Bytom and half of Ścinawa from 1412 to 1416, sharing rule with his brothers. After 1416 he became the sole ruler of Kąty, Bierutów, Prudnik and Syców. In 1417, he assumed the role of Bishop of Wrocław and also held the title of Duke of Nysa.

The Duchy of Oels or Duchy of Oleśnica 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.