Władysław of Oświęcim
Władysław of Oświęcim (1275/1280–1324) was the eldest son of Mieszko I, Duke of Cieszyn, who named him co-ruler in 1290. When Mieszko died in 1315, Władysław received not Cieszyn but the smaller Oświęcim, becoming its first duke and founding the Oświęcim branch of the Silesian Piasts.
He allied with his namesake Władysław the Elbow-high, king of Poland from 1320, and after his death in 1324 his son Jan the Scholastic succeeded him.