Answer
Bolesław the Pious was the uncle of Przemysł II. Przemysł II was the Duke of Greater Poland from 1273 to 1296 and King of Poland from 1295 to 1296. Bolesław the Pious was the Duke of Greater Poland from 1239 to 1279. He was the father of Przemysł II's mother, Salomea of Greater Poland.