_Francis I ASCANIA ________________________+
                                                                               | (1510 - 1580)                             
                                   _Francis II ASCANIA ________________________|
                                  | (1547 - 1619) m 1582                       |
                                  |                                            |_Sibylle of WETTIN ________________________+
                                  |                                              (1515 - 1592)                             
 _Francis Henry ASCANIA __________|
| (1604 - 1658)                   |
|                                 |                                             _Julius WELF ______________________________+
|                                 |                                            | (1528 - 1589)                             
|                                 |_Maria of WELF _____________________________|
|                                    m 1582                                    |
|                                                                              |_Hedwig of HOHENZOLLERN ___________________+
|                                                                                (1539 - 1602)                             
|
|--Catherine Marie of ASCANIA 
|  (1640 - 1641)
|                                                                               _John VI NASSAU-DILLENBURG ________________+
|                                                                              | (1536 - 1606) m 1559                      
|                                  _John VII NASSAU-SIEGEN ____________________|
|                                 | (1561 - 1623)                              |
|                                 |                                            |_Elisabeth of LEUCHTENBERG ________________
|                                 |                                              (1536 - 1579) m 1559                      
|_Marie Juliane of NASSAU-SIEGEN _|
  (1612 - 1665)                   |
                                  |                                             _John II of SCHLESWIG-HOLSTEIN-SONDERBURG _+
                                  |                                            | (1545 - 1622)                             
                                  |_Margaret of SCHLESWIG-HOLSTEIN-SONDERBURG _|
                                    (1582 - 1658)                              |
                                                                               |_Elisabeth of WELF ________________________+
                                                                                 (1549 - 1585)