_John I MECKLENBURG ______+
                                                    | (1245 - 1283)            
                         _Nicholas II MECKLENBURG __|
                        | (1275 - 1315) m 1292      |
                        |                           |_Sophia of LINDOW-RUPPIN _
                        |                                                      
 _John III MECKLENBURG _|
| (1300 - 1352)         |
|                       |                            _Eric V ESTRIDSEN ________+
|                       |                           | (1249 - 1286)            
|                       |_Richeza of ESTRIDSEN _____|
|                         (1272 - 1308) m 1292      |
|                                                   |_Agnes of ASCANIA ________+
|                                                     (1257 - 1304)            
|
|--Nicholas IV MECKLENBURG 
|  (1331 - 1354)
|                                                    _Barnim I GRIFFIN ________+
|                                                   | (1217 - 1278) m 1267     
|                        _Otto I GRIFFIN ___________|
|                       | (1279 - 1344) m 1296      |
|                       |                           |_Matilda of ASCANIA ______+
|                       |                             (1255 - 1316) m 1267     
|_Matilda of GRIFFIN ___|
  (.... - 1361)         |
                        |                            __________________________
                        |                           |                          
                        |_Elizabeth of SCHAUENBURG _|
                          (1282 - 1318) m 1296      |
                                                    |__________________________