_John I HENNEBERG __________+
                                                | (1300 - 1359)              
                        _Henry VII HENNEBERG ___|
                       | (1352 - 1405) m 1376   |
                       |                        |_Elisabeth of LEUCHTENBERG _
                       |                          (1325 - 1361)              
 _William I HENNEBERG _|
| (1384 - 1426) m 1413 |
|                      |                         _Rudolf VI ZÄHRINGEN ______+
|                      |                        | (.... - 1371)              
|                      |_Matilde of ZÄHRINGEN _|
|                        (.... - 1425) m 1376   |
|                                               |_Matilde of SPONHEIM _______+
|                                                                            
|
|--Henry VIII HENNEBERG 
|  (.... - 1347)
|                                                _Ernest I WELF _____________+
|                                               | (1305 - 1367)              
|                       _Otto I WELF ___________|
|                      | (1330 - 1394)          |
|                      |                        |_Elisabeth of HESSE ________+
|                      |                          (1329 - 1366)              
|_Anna of WELF ________|
  (1387 - 1426) m 1413 |
                       |                         ____________________________
                       |                        |                            
                       |_Margaret of JÜLICH ___|
                                                |
                                                |____________________________