_Christian III OLDENBURG _+
                                                                                        | (1503 - 1558)            
                                            _John II of SCHLESWIG-HOLSTEIN-SONDERBURG __|
                                           | (1545 - 1622)                              |
                                           |                                            |_Dorothea of ASCANIA _____+
                                           |                                              (1511 - 1571)            
 _Alexander SCHLESWIG-HOLSTEIN-SONDERBURG _|
| (1572 - 1627)                            |
|                                          |                                             _Ernest III WELF _________+
|                                          |                                            | (1518 - 1567)            
|                                          |_Elisabeth of WELF _________________________|
|                                            (1549 - 1585)                              |
|                                                                                       |_Margaret of GRIFFIN _____+
|                                                                                         (1518 - 1569)            
|
|--Philip Louis SCHLESWIG-HOLSTEIN-SONDERBURG 
|  
|                                                                                        __________________________
|                                                                                       |                          
|                                           _John Günther I SCHWARZBURG-SONDERSHAUSEN _|
|                                          | (1532 - 1586)                              |
|                                          |                                            |__________________________
|                                          |                                                                       
|_Dorothea of SCHWARZBURG-SONDERSHAUSEN ___|
  (1574 - 1640)                            |
                                           |                                             _Anton I OLDENBURG _______+
                                           |                                            | (1505 - 1572) m 1536     
                                           |_Anna of OLDENBURG _________________________|
                                             (1539 - 1579)                              |
                                                                                        |_Sophie of ASCANIA _______+
                                                                                          (1521 - 1571) m 1536