_Albert I ASCANIA _____________+
                                                              | (1175 - 1260) m 1247          
                          _John I ASCANIA ____________________|
                         | (1249 - 1285)                      |
                         |                                    |_Helen of WELF ________________+
                         |                                      (1231 - 1273) m 1247          
 _Eric I ASCANIA ________|
| (1280 - 1360)          |
|                        |                                     _Birger Magnusson BJÄLBO _____+
|                        |                                    | (1200 - 1266)                 
|                        |_Ingeborg Birgersdotter of BJÄLBO _|
|                          (1253 - 1302)                      |
|                                                             |_Ingeborg Eriksdotter of ERIC _+
|                                                               (1212 - 1254)                 
|
|--John I ASCANIA 
|  (.... - 1372)
|                                                              _Barnim I GRIFFINS ____________+
|                                                             | (1217 - 1278)                 
|                         _Bogislaw IV GRIFFINS ______________|
|                        | (1255 - 1308)                      |
|                        |                                    |_Margaretta of MECKLENBURG ____
|                        |                                      (1231 - 1261)                 
|_Elisabeth of GRIFFINS _|
  (1291 - 1349)          |
                         |                                     _______________________________
                         |                                    |                               
                         |_Margareta of RUGIA ________________|
                                                              |
                                                              |_______________________________