Vasa(redirected from DDX4)
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Swedish royal dynasty (1523-1654). The founder was Gustavus I Vasa (ruled 1523-60). His sons Eric XIV (1560-68) and John III (1568-92), his grandson Sigismund (1592-1604, in actuality until 1599), Gustavus’ son Charles IX (1604-11), Charles’ son Gustavus II Adolphus (1611-32), and the daughter of Gustavus II, Christina (1632-54) were all monarchs of Sweden. The Vasa dynasty also reigned in Poland from 1587 to 1668, including Sigismund III (1587-1632), who was the son of John III of Sweden and Catherine Jagello, the daughter of the Polish king Sigismund I the Old (with the election of Sigismund III as king of Sweden in 1592, the Swedish-Polish personal union that lasted until 1599 was established); and the sons of Sigismund III Ladislas IV (1632-48) and John Casimir (1648-68).