_Henry VII HENNEBERG ___+
                                               | (1352 - 1405) m 1376   
                         _William I HENNEBERG _|
                        | (1384 - 1426) m 1413 |
                        |                      |_Matilde of ZÄHRINGEN _+
                        |                        (.... - 1425) m 1376   
 _William II HENNEBERG _|
| (1414 - 1443)         |
|                       |                       _Otto I WELF ___________+
|                       |                      | (1330 - 1394)          
|                       |_Anna of WELF ________|
|                         (1387 - 1426) m 1413 |
|                                              |_Margaret of JÜLICH ___
|                                                                       
|
|--William III HENNEBERG 
|  (1433 - 1480)
|                                               ________________________
|                                              |                        
|                        ______________________|
|                       |                      |
|                       |                      |________________________
|                       |                                               
|_Catherine of HANAU ___|
  (1407 - 1460)         |
                        |                       ________________________
                        |                      |                        
                        |______________________|
                                               |
                                               |________________________