_Henry Borwin I MECKLENBURG _+
                                                         | (.... - 1226)               
                           _Henry Borwin II MECKLENBURG _|
                          | (1170 - 1226)                |
                          |                              |_Matilda of WELF ____________+
                          |                                                            
 _Nicholas I MECKLENBURG _|
| (1210 - 1277) m 1232    |
|                         |                               _Sverker II SVERKER _________+
|                         |                              | (1167 - 1210)               
|                         |_Christina of SVERKER ________|
|                           (.... - 1248)                |
|                                                        |_Benedicta HVIDE ____________
|                                                          (1165 - 1199)               
|
|--John I MECKLENBURG 
|  (1245 - 1283)
|                                                         _Bernard III ASCANIA ________+
|                                                        | (1134 - 1211) m 1173        
|                          _Henry I ASCANIA _____________|
|                         | (1170 - 1252)                |
|                         |                              |_Judith of PIAST ____________+
|                         |                                (1154 - 1201) m 1173        
|_Judith of ASCANIA ______|
  (.... - 1277) m 1232    |
                          |                               _Hermann I LUDOVING _________+
                          |                              | (1165 - 1217)               
                          |_Irmgard of LUDOVING _________|
                            (1197 - 1244)                |
                                                         |_Sophia of WITTELSBACH ______+
                                                           (1170 - 1238)