_Otto V WELF ______________+
                                                | (1439 - 1470) m 1467      
                          _Henry WELF __________|
                         | (1468 - 1531)        |
                         |                      |_Anna of NASSAU-SIEGEN ____+
                         |                        (1441 - 1514) m 1467      
 _Ernest I WELF _________|
| (1497 - 1545)          |
|                        |                       _Ernest WETTIN ____________+
|                        |                      | (1440 - 1486)             
|                        |_Margarete of WETTIN _|
|                          (1469 - 1528)        |
|                                               |_Elisabeth of WITTELSBACH _+
|                                                 (1442 - 1483)             
|
|--Francis Otto WELF 
|  (1530 - 1559)
|                                                _Magnus II MECKLENBURG ____+
|                                               | (1441 - 1503)             
|                         _Henry V MECKLENBURG _|
|                        | (1479 - 1551) m 1551 |
|                        |                      |_Sophia of GRIFFIN ________+
|                        |                        (1460 - 1504)             
|_Sophia of MECKLENBURG _|
  (1508 - 1541)          |
                         |                       _Magnus I ASCANIA _________+
                         |                      | (1469 - 1563)             
                         |_Ursula of ASCANIA ___|
                           (1523 - 1577) m 1551 |
                                                |_Catherine of WELF ________+
                                                  (1488 - 1563)