_John WELF _______________+
                                                | (1242 - 1277)            
                       _Otto II WELF ___________|
                      | (1266 - 1330) m 1288    |
                      |                         |_Liutgard of SCHAUENBURG _
                      |                           (.... - 1288)            
 _William II WELF ____|
| (1300 - 1369)       |
|                     |                          _Louis I WITTELSBACH _____+
|                     |                         | (1229 - 1293)            
|                     |_Matilda of WITTELSBACH _|
|                       (1275 - 1319) m 1288    |
|                                               |_Matilda of HABSBURG _____+
|                                                 (1253 - 1304)            
|
|--Matilda of WELF 
|  
|                                                __________________________
|                                               |                          
|                      _________________________|
|                     |                         |
|                     |                         |__________________________
|                     |                                                    
|_Mary of UNKNOWN ____|
                      |
                      |                          __________________________
                      |                         |                          
                      |_________________________|
                                                |
                                                |__________________________