_Joachim Ernest ASCANIA ___+
                                                     | (1536 - 1586) m 1559      
                          _John George I ASCANIA ____|
                         | (1567 - 1618) m 1594      |
                         |                           |_Agnes of BARBY ___________
                         |                             (1540 - 1569) m 1559      
 _John Casimir ASCANIA __|
| (1596 - 1660)          |
|                        |                            _John Casimir WITTELSBACH _+
|                        |                           | (1542 - 1591)             
|                        |_Dorothea of WITTELSBACH __|
|                          (1580 - 1631) m 1594      |
|                                                    |_Elisabeth of WETTIN ______+
|                                                      (1552 - 1590)             
|
|--Dorothea of ASCANIA 
|  (1625 - 1626)
|                                                     _William IV HESSE-KASSEL __+
|                                                    | (1532 - 1592) m 1565      
|                         _Maurice HESSE-KASSEL _____|
|                        | (1572 - 1631) m 1631      |
|                        |                           |_Sabine of WÜRTTEMBERG ___+
|                        |                             (1549 - 1581) m 1565      
|_Agnes of HESSE-KASSEL _|
  (1606 - 1650)          |
                         |                            _John VII NASSAU-SIEGEN ___+
                         |                           | (1561 - 1623)             
                         |_Juliane of NASSAU-SIEGEN _|
                           (1587 - 1642) m 1631      |
                                                     |_Magdalene of WALDECK _____
                                                       (1558 - 1599)