_Otto V WELF ______________+
                                             | (1439 - 1470) m 1467      
                       _Henry WELF __________|
                      | (1468 - 1531)        |
                      |                      |_Anna of NASSAU-SIEGEN ____+
                      |                        (1441 - 1514) m 1467      
 _Francis WELF _______|
| (1508 - 1549) m 1547|
|                     |                       _Ernest WETTIN ____________+
|                     |                      | (1440 - 1486)             
|                     |_Margarete of WETTIN _|
|                       (1469 - 1528)        |
|                                            |_Elisabeth of WITTELSBACH _+
|                                              (1442 - 1483)             
|
|--Catherine of WELF 
|  (1548 - 1565)
|                                             _John V ASCANIA ___________+
|                                            | (1439 - 1507)             
|                      _Magnus I ASCANIA ____|
|                     | (1469 - 1563)        |
|                     |                      |_Dorothea of HOHENZOLLERN _+
|                     |                        (1446 - 1518)             
|_Clara of ASCANIA ___|
  (1518 - 1576) m 1547|
                      |                       _Henry IV WELF ____________+
                      |                      | (1463 - 1514)             
                      |_Catherine of WELF ___|
                        (1488 - 1563)        |
                                             |_Catherine of GRIFFIN _____+
                                               (1465 - 1526)