Casimir of Bytom

Casimir of Bytom (; 1253/57 – 10 March 1312) was a Duke of Opole during 1282–1284 (with his brother as co-ruler) and Duke of Bytom from 1284 until his death. He was the second son of Władysław, Duke of Opole–Racibórz, by his wife Euphemia, daughter of Władysław Odonic, Duke of Greater Poland. Life Little is known about the first years of Casimir's life. By 1264, he was knighted by King Ottokar II of Bohemia and with this began his politic activities with his father. After the death of his father in 1282, Casimir inherited the Duchy of Opole with his brother Bolko I as co-rulers. The common rule between them lasted until 1284, when they decided to make a formal division of their domains: Casimir took the towns of Bytom (the main city and now capital of his Duchy), Koźle, Toszek, Gliwice and Siewierz.