Another return of Piasts:
Janusz III (1502-1526) Duke of Mazovia, m. Katarzyna Radziejowska
1) Konrad IV (1525-1557) Duke of Mazovia, m. Zofia Jagiellonka (1522-1575)
1) Bolesław VI (1548-1600) Duke of Mazovia 1557, King of Poland 1572, m. Maria Maximiliana of Bavaria (1552-1614)
2) Zygmunt...