Bolesław the Elder

Bolesław the Elder (c. 1293 – c. 1365) was a Silesian Piast duke, eldest son of Bolko I of Opole. After his father's death in 1313 he ruled Wieluń and Niemodlin. Tied to the Luxembourg kings of Bohemia, war with Władysław I cost him Wieluń in 1326, and in 1327 he did homage to King John.

He joined John's 1328 crusade against Lithuania and in 1355 accompanied Charles IV to his imperial coronation in Rome. In 1325 he married Euphemia of Wrocław, by whom he had eight children.