_William WELF ________+ | (1184 - 1213) _Otto I WELF ________| | (1204 - 1252) m 1228| | |_Helena of ESTRIDSEN _+ | (1180 - 1233) _John WELF _______________| | (1242 - 1277) | | | _Albert II ASCANIA ___+ | | | (1177 - 1219) m 1205 | |_Matilda of ASCANIA _| | (1210 - 1261) m 1228| | |_Matilda of WETTIN ___+ | (1185 - 1225) m 1205 | |--Helene of WELF | | ______________________ | | | _____________________| | | | | | |______________________ | | |_Liutgard of SCHAUENBURG _| (.... - 1288) | | ______________________ | | |_____________________| | |______________________