_Bernard I WELF ______________+
                                                      | (1358 - 1434) m 1386         
                          _Frederick II WELF _________|
                         | (1418 - 1477) m 1429       |
                         |                            |_Margaret of ASCANIA _________+
                         |                               m 1386                      
 _Otto V WELF ___________|
| (1439 - 1470) m 1467   |
|                        |                             _Frederick VI HOHENZOLLERN ___+
|                        |                            | (1371 - 1440) m 1401         
|                        |_Magdalene of HOHENZOLLERN _|
|                          (1412 - 1454) m 1429       |
|                                                     |_Elisabeth of WITTELSBACH ____+
|                                                       (1383 - 1441) m 1401         
|
|--William WELF 
|  (.... - 1480)
|                                                      _Englebert I NASSAU-SIEGEN ___+
|                                                     | (1370 - 1442)                
|                         _John IV NASSAU-SIEGEN _____|
|                        | (1410 - 1474)              |
|                        |                            |_Johanna VAN POLANEN _________
|                        |                              (1391 - 1445)                
|_Anna of NASSAU-SIEGEN _|
  (1441 - 1514) m 1467   |
                         |                             _John II LOON ________________
                         |                            |                              
                         |_Maria of LOON-HEINSBERG ___|
                           (1426 - 1502)              |
                                                      |_Margaret of SOLMS-BRAUNFELS _