_Albert II ASCANIA _________+
                                                               | (1177 - 1219) m 1205       
                         _Otto III ASCANIA ____________________|
                        | (1215 - 1267)                        |
                        |                                      |_Matilda of WETTIN _________+
                        |                                        (1185 - 1225) m 1205       
 _Albert III ASCANIA ___|
| (1250 - 1300)         |
|                       |                                       _Wenceslaus I PŘEMYSLID ___+
|                       |                                      | (1205 - 1253)              
|                       |_Beatrice of PŘEMYSLID ______________|
|                         (1225 - 1290)                        |
|                                                              |_Kunigunde of HOHENSTAUFEN _+
|                                                                (1201 - 1248)              
|
|--Beatrix of ASCANIA 
|  (.... - 1314)
|                                                               _Valdemar II ESTRIDSEN _____+
|                                                              | (1170 - 1241)              
|                        _Christopher I Valdemarsen ESTRIDSEN _|
|                       | (1219 - 1259)                        |
|                       |                                      |_Berengaria BURGUNDY _______+
|                       |                                        (1198 - 1221)              
|_Matilda of ESTRIDSEN _|
  (1250 - 1299)         |
                        |                                       ____________________________
                        |                                      |                            
                        |_Margaret of SOBIESLAW _______________|
                          (1230 - 1282)                        |
                                                               |____________________________