Mieszko I of Cieszyn
Mieszko I (1252/1256–1314/1315), eldest son of Władysław of Opole-Racibórz, was the first Piast duke of Cieszyn. In the 1290 partition he received Cieszyn, Oświęcim and Zator, and promoted colonization by granting the towns their rights.
He tied his fate to Bohemia, swearing homage to Wenceslaus II in 1292 and attending his coronation in 1300. His daughter Viola Elisabeth married Wenceslaus III in 1305, but the young king's murder in 1306 ended his ambitions, and his sons took over the duchy.