_Christian III OLDENBURG _+ | (1503 - 1558) _John II OLDENBURG __| | (1545 - 1622) | | |_Dorothea of ASCANIA _____+ | (1511 - 1571) _Alexander SCHLESWIG-HOLSTEIN-SONDERBURG _| | (1572 - 1627) | | | _Ernest III WELF _________+ | | | (1518 - 1567) | |_Elisabeth of WELF __| | (1549 - 1585) | | |_Margaret of GRIFFINS ____ | (1518 - 1569) | |--Ernest Gunther SCHLESWIG-HOLSTEIN-SONDERBURG | (1609 - 1688) | __________________________ | | | _____________________| | | | | | |__________________________ | | |_Dorothea of SCHWARZBURG-SONDERSHAUSEN ___| | | __________________________ | | |_____________________| | |__________________________