谁嫁给了Euphrosyne of Masovia？

Euphrosyne of Masovia also known as Eufrozja (1292–1328/1329) was Duchess of Oświęcim by her marriage. She served in the regency of her son John, in the duchy of Oświęcim.

Władysław of Oświęcim (Polish: Władysław oświęcimski; 1275/80 – by 15 May 1324), was a Duke of Oświęcim from 1315 until his death.

He was the eldest son of Mieszko I, Duke of Cieszyn by his wife, probably called Grzymisława.