_Bernard III ASCANIA _____+
                                                  | (1134 - 1211) m 1173     
                       _Albert I ASCANIA _________|
                      | (1175 - 1260) m 1247      |
                      |                           |_Judith of PIAST _________+
                      |                             (1154 - 1201) m 1173     
 _Albert II ASCANIA __|
| (1250 - 1298)       |
|                     |                            _Otto I WELF _____________+
|                     |                           | (1204 - 1252) m 1228     
|                     |_Helen of WELF ____________|
|                       (1231 - 1273) m 1247      |
|                                                 |_Matilda of ASCANIA ______+
|                                                   (1210 - 1261) m 1228     
|
|--Otto ASCANIA 
|  (.... - 1349)
|                                                  _Albert IV HABSBURG ______+
|                                                 | (1188 - 1239) m 1217     
|                      _Rudolf I HABSBURG ________|
|                     | (1218 - 1291)             |
|                     |                           |_Hedwig of KYBURG ________+
|                     |                              m 1217                  
|_Agnes of HABSBURG __|
  (1257 - 1322)       |
                      |                            _Burkhard V HOHENZOLLERN _+
                      |                           | (1201 - 1253)            
                      |_Gertrude of HOHENZOLLERN _|
                        (1225 - 1280)             |
                                                  |_Matilda of TÜBINGEN ____
                                                    (.... - 1253)