_John V OLDENBURG ___+
                                                              | (1460 - 1525)       
                                         _Anton I OLDENBURG __|
                                        | (1505 - 1572) m 1536|
                                        |                     |_Anna of ASCANIA ____+
                                        |                       (.... - 1531)       
 _John VII OLDENBURG ___________________|
| (1540 - 1603) m 1576                  |
|                                       |                      _Magnus I ASCANIA ___+
|                                       |                     | (1469 - 1563)       
|                                       |_Sophie of ASCANIA __|
|                                         (1521 - 1571) m 1536|
|                                                             |_Catherine of WELF __+
|                                                               (1488 - 1563)       
|
|--John OLDENBURG 
|  (1578 - 1580)
|                                                              _____________________
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|                                        _____________________|
|                                       |                     |
|                                       |                     |_____________________
|                                       |                                           
|_Elisabeth of SCHWARZBURG-BLANKENBURG _|
  (.... - 1612) m 1576                  |
                                        |                      _____________________
                                        |                     |                     
                                        |_____________________|
                                                              |
                                                              |_____________________