_John I MECKLENBURG ______+
                                                   | (1245 - 1283)            
                             _John II MECKLENBURG _|
                            | (1250 - 1337)        |
                            |                      |_Sophia of LINDOW-RUPPIN _
                            |                                                 
 _Nicholas III MECKLENBURG _|
| (1311 - 1360) m 1341      |
|                           |                       _Henry I WELF ____________+
|                           |                      | (1267 - 1322) m 1282     
|                           |_Mechtild of WELF ____|
|                             (1295 - 1343)        |
|                                                  |_Agnes of WETTIN _________+
|                                                    (1264 - 1332) m 1282     
|
|--Catherine of MECKLENBURG 
|  (.... - 1402)
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|                           |                                                 
|_Matilda of HOLSTEIN-PLON _|
   m 1341                   |
                            |                       __________________________
                            |                      |                          
                            |______________________|
                                                   |
                                                   |__________________________