_Henry WELF _________________+
                                               | (1468 - 1531)               
                       _Ernest I WELF _________|
                      | (1497 - 1545)          |
                      |                        |_Margarete of WETTIN ________+
                      |                          (1469 - 1528)               
 _Henry III WELF _____|
| (1533 - 1597)       |
|                     |                         _Henry V MECKLENBURG ________+
|                     |                        | (1479 - 1551) m 1551        
|                     |_Sophia of MECKLENBURG _|
|                       (1508 - 1541)          |
|                                              |_Ursula of ASCANIA __________+
|                                                (1523 - 1577) m 1551        
|
|--Sidonia of WELF 
|  (1577 - 1645)
|                                               _Magnus I ASCANIA ___________+
|                                              | (1469 - 1563)               
|                      _Francis I ASCANIA _____|
|                     | (1510 - 1580)          |
|                     |                        |_Catherine of WELF __________+
|                     |                          (1488 - 1563)               
|_Ursula of ASCANIA __|
  (1545 - 1620)       |
                      |                         _Henry IV der Fromme WETTIN _+
                      |                        | (1472 - 1541)               
                      |_Sibylle of WETTIN _____|
                        (1515 - 1592)          |
                                               |_Catherine of MECKLENBURG ___+
                                                 (1487 - 1561)