_Ernest I WELF ______________________+
                                                         | (1497 - 1545)                       
                       _Henry III WELF __________________|
                      | (1533 - 1597)                    |
                      |                                  |_Sophia of MECKLENBURG ______________+
                      |                                    (1508 - 1541)                       
 _Julius Ernest WELF _|
| (1571 - 1636)       |
|                     |                                   _Francis I ASCANIA __________________+
|                     |                                  | (1510 - 1580)                       
|                     |_Ursula of ASCANIA _______________|
|                       (1545 - 1620)                    |
|                                                        |_Sibylle of WETTIN __________________+
|                                                          (1515 - 1592)                       
|
|--Sigismund Heinrich WELF 
|  (1614 - 1614)
|                                                         _Enno II CIRKSENA ___________________+
|                                                        | (1505 - 1540)                       
|                      _Edzard II CIRKSENA ______________|
|                     | (1532 - 1598)                    |
|                     |                                  |_Anna of OLDENBURG __________________+
|                     |                                    (1501 - 1575)                       
|_Maria of CIRKSENA __|
  (1581 - 1616)       |
                      |                                   _Gustav I VASA ______________________+
                      |                                  | (1496 - 1560)                       
                      |_Catherine Gustavsdotter of VASA _|
                        (1539 - 1610)                    |
                                                         |_Margareta Eriksdotter LEIJONHUFVUD _
                                                           (1515 - 1551)