_Bogislaw I GRIFFIN __________+
                                                      | (1130 - 1186) m 1177         
                             _Bogislaw II GRIFFIN ____|
                            | (1177 - 1219)           |
                            |                         |_Anastasia of PIAST __________+
                            |                           (1164 - 1240) m 1177         
 _Barnim I GRIFFIN _________|
| (1217 - 1278)             |
|                           |                          ______________________________
|                           |                         |                              
|                           |_Miroslawa of SOBIESLAW _|
|                                                     |
|                                                     |______________________________
|                                                                                    
|
|--Bogislaw IV GRIFFIN 
|  (1255 - 1308)
|                                                      _Henry Borwin II MECKLENBURG _+
|                                                     | (1170 - 1226)                
|                            _Nicholas I MECKLENBURG _|
|                           | (1210 - 1277) m 1232    |
|                           |                         |_Christina of SVERKER ________+
|                           |                           (.... - 1248)                
|_Margareta of MECKLENBURG _|
  (1231 - 1261)             |
                            |                          _Henry I ASCANIA _____________+
                            |                         | (1170 - 1252)                
                            |_Judith of ASCANIA ______|
                              (.... - 1277) m 1232    |
                                                      |_Irmgard of LUDOVING _________+
                                                        (1197 - 1244)