_Valdemar II ESTRIDSEN _+
                                                             | (1170 - 1241)          
                       _Christopher I Valdemarsen ESTRIDSEN _|
                      | (1219 - 1259)                        |
                      |                                      |_Berengaria BURGUNDY ___+
                      |                                        (1198 - 1221)          
 _Eric V ESTRIDSEN ___|
| (1249 - 1286)       |
|                     |                                       ________________________
|                     |                                      |                        
|                     |_Margaret of SOBIESLAW _______________|
|                       (1230 - 1282)                        |
|                                                            |________________________
|                                                                                     
|
|--Christopher II ESTRIDSEN 
|  (1276 - 1332)
|                                                             _Albert II ASCANIA _____+
|                                                            | (1177 - 1219) m 1205   
|                      _John I ASCANIA ______________________|
|                     | (1213 - 1266) m 1255                 |
|                     |                                      |_Matilda of WETTIN _____+
|                     |                                        (1185 - 1225) m 1205   
|_Agnes of ASCANIA ___|
  (1257 - 1304)       |
                      |                                       _Albert I ASCANIA ______+
                      |                                      | (1175 - 1260) m 1229   
                      |_Jutta of ASCANIA ____________________|
                         m 1255                              |
                                                             |_Agnes of LUDOVING _____+
                                                               (1205 - 1246) m 1229