1 Žyhimont II Aŭhust (1520-1572), Grand Duke of the Grand Duchy of Lithuania (GDL) and king of Poland (1548-1572). Son of Žyhimont I and the last monarch of the Jahajła dynasty.… 2 Žyhimont III Vaza (1566-1632), Grand Duke of the Grand Duchy of Lithuania (GDL) and king of Poland (1587-1632). Son of the king of Sweden and of Catherine, the sister of… 3 Žyhimont I Stary ("The Old"; 1467-1548), Grand Duke of the Grand Duchy of Lithuania (GDL) and king of Poland (also Zygmunt, Sigismund; r. 1506-1548). Son of Kazimir IV… 4 Žyhimont Kiejstutavič (ca. 1365-1440), Grand Duke of the Grand Duchy of Lithuania (GDL), younger son of Kiejstut, and brother of Vitaŭt. In the power struggle between Grand…