Swedish (and Polish) royal dynasty.
Its founder was Gustav Eriksson Vasa, regent of Sweden (1521) and king (1523) as Gustav I Vasa . His descendants reigned in Sweden until 1818, the last being Charles XIII . A grandson of Gustav became king of Poland (1587–1632) as Sigismund III Vasa , also ruling Sweden in the years 1592–99. He was succeeded as king of Poland by his sons, Wladyslaw IV Vasa (r. 1632–48) and John II Casimir Vasa (r.1648–68), after which the dynasty ended in Poland.