_Frederick I OLDENBURG ___________+
                                                                       | (1471 - 1533) m 1502             
                                             _Christian III OLDENBURG _|
                                            | (1503 - 1558)            |
                                            |                          |_Anna of HOHENZOLLERN ____________+
                                            |                            (1487 - 1514) m 1502             
 _John II of SCHLESWIG-HOLSTEIN-SONDERBURG _|
| (1545 - 1622)                             |
|                                           |                           _Magnus I ASCANIA ________________+
|                                           |                          | (1469 - 1563)                    
|                                           |_Dorothea of ASCANIA _____|
|                                             (1511 - 1571)            |
|                                                                      |_Catherine of WELF _______________+
|                                                                        (1488 - 1563)                    
|
|--John Adolph SCHLESWIG-HOLSTEIN-SONDERBURG 
|  (1576 - 1623)
|                                                                       _Philip I WELF ___________________+
|                                                                      | (1476 - 1551)                    
|                                            _Ernest III WELF _________|
|                                           | (1518 - 1567)            |
|                                           |                          |_Catherine of MANSFELD-VORDERORT _
|                                           |                            (1501 - 1535)                    
|_Elisabeth of WELF ________________________|
  (1549 - 1585)                             |
                                            |                           _George I GRIFFIN ________________+
                                            |                          | (1493 - 1531)                    
                                            |_Margaret of GRIFFIN _____|
                                              (1518 - 1569)            |
                                                                       |_Amalie of WITTELSBACH ___________+
                                                                         (1490 - 1523)