_Nicholas I MECKLENBURG ______________+
                                                      | (1210 - 1277) m 1232                 
                            _John I MECKLENBURG ______|
                           | (1245 - 1283)            |
                           |                          |_Judith of ASCANIA ___________________+
                           |                            (.... - 1277) m 1232                 
 _Nicholas II MECKLENBURG _|
| (1275 - 1315) m 1292     |
|                          |                           ______________________________________
|                          |                          |                                      
|                          |_Sophia of LINDOW-RUPPIN _|
|                                                     |
|                                                     |______________________________________
|                                                                                            
|
|--John III MECKLENBURG 
|  (1300 - 1352)
|                                                      _Christopher I Valdemarsen ESTRIDSEN _+
|                                                     | (1219 - 1259)                        
|                           _Eric V ESTRIDSEN ________|
|                          | (1249 - 1286)            |
|                          |                          |_Margaret of SOBIESLAW _______________
|                          |                            (1230 - 1282)                        
|_Richeza of ESTRIDSEN ____|
  (1272 - 1308) m 1292     |
                           |                           _John I ASCANIA ______________________+
                           |                          | (1213 - 1266) m 1255                 
                           |_Agnes of ASCANIA ________|
                             (1257 - 1304)            |
                                                      |_Jutta of ASCANIA ____________________+
                                                         m 1255