_Henry NASSAU-SIEGEN _______________+
                                                  | (1270 - 1343) m 1302               
                          _Otto II NASSAU-SIEGEN _|
                         | (1305 - 1350)          |
                         |                        |_Adelaide of HEINSBERG-BLANKENBURG _
                         |                          (.... - 1343) m 1302               
 _John I NASSAU-SIEGEN __|
| (1340 - 1416) m 1357   |
|                        |                         ____________________________________
|                        |                        |                                    
|                        |_Adelheid of VIANDEN ___|
|                                                 |
|                                                 |____________________________________
|                                                                                      
|
|--Englebert I NASSAU-SIEGEN 
|  (1370 - 1442)
|                                                  ____________________________________
|                                                 |                                    
|                         ________________________|
|                        |                        |
|                        |                        |____________________________________
|                        |                                                             
|_Margareta of LA MARCK _|
  (1409 - ....) m 1357   |
                         |                         ____________________________________
                         |                        |                                    
                         |________________________|
                                                  |
                                                  |____________________________________