Father : William III HENNEBERG #71025
Mother : Margaret of WELF #71024
_William I HENNEBERG _+ | (1384 - 1426) m 1413 _William II HENNEBERG _| | (1414 - 1443) | | |_Anna of WELF ________+ | (1387 - 1426) m 1413 _William III HENNEBERG _| | (1433 - 1480) | | | ______________________ | | | | |_Catherine of HANAU ___| | (1407 - 1460) | | |______________________ | | |--William IV HENNEBERG | (1477 - 1558) | _Henry WELF __________+ | | (1355 - 1416) | _Henry WELF ___________| | | (1411 - 1473) m 1436 | | | |_Margaret of HESSE ___+ | | (1389 - 1446) |_Margaret of WELF ______| (1450 - 1509) | | ______________________ | | |_Helen of CLEVES ______| (1423 - 1471) m 1436 | |______________________