_Otto I WELF __________________+ | (1204 - 1252) m 1228 _Albert I WELF ____________________| | (1236 - 1279) | | |_Matilda of ASCANIA ___________+ | (1210 - 1261) m 1228 _Albert II WELF ______| | (1268 - 1318) | | | _______________________________ | | | | |_Adelheid of ALERAMICI ____________| | (1242 - 1285) | | |_______________________________ | | |--Jutta of WELF | | _______________________________ | | | _Henry I MECKLENBURG ______________| | | (.... - 1291) | | | |_______________________________ | | |_Rixa of MECKLENBURG _| (1275 - 1317) | | _Birger Magnusson BJÄLBO _____+ | | (1200 - 1266) |_Rikissa Birgersdotter of BJÄLBO _| (1237 - 1288) | |_Ingeborg Eriksdotter of ERIC _+ (1212 - 1254)