_Bernard III ASCANIA ___+
                                             | (1134 - 1211) m 1173   
                       _Henry I ASCANIA _____|
                      | (1170 - 1252)        |
                      |                      |_Judith of PIAST _______+
                      |                        (1154 - 1201) m 1173   
 _Henry II ASCANIA ___|
| (1215 - 1266)       |
|                     |                       _Hermann I LUDOVING ____+
|                     |                      | (1165 - 1217)          
|                     |_Irmgard of LUDOVING _|
|                       (1197 - 1244)        |
|                                            |_Sophia of WITTELSBACH _+
|                                              (1170 - 1238)          
|
|--Otto I ASCANIA 
|  (.... - 1304)
|                                             _William WELF __________+
|                                            | (1184 - 1213)          
|                      _Otto I WELF _________|
|                     | (1204 - 1252) m 1228 |
|                     |                      |_Helena of ESTRIDSEN ___+
|                     |                        (1180 - 1233)          
|_Matilda of WELF ____|
  (.... - 1295)       |
                      |                       _Albert II ASCANIA _____+
                      |                      | (1177 - 1219) m 1205   
                      |_Matilda of ASCANIA __|
                        (1210 - 1261) m 1228 |
                                             |_Matilda of WETTIN _____+
                                               (1185 - 1225) m 1205