_Berthold VII HENNEBERG ___+
                                                      | (1272 - 1340)             
                          _John I HENNEBERG __________|
                         | (1300 - 1359)              |
                         |                            |_Adelheid of HESSE ________+
                         |                              (1268 - 1315)             
 _Henry VII HENNEBERG ___|
| (1352 - 1405) m 1376   |
|                        |                             ___________________________
|                        |                            |                           
|                        |_Elisabeth of LEUCHTENBERG _|
|                          (1325 - 1361)              |
|                                                     |___________________________
|                                                                                 
|
|--William I HENNEBERG 
|  (1384 - 1426)
|                                                      _Frederick III ZÄHRINGEN _+
|                                                     | (1327 - 1353) m 1345      
|                         _Rudolf VI ZÄHRINGEN ______|
|                        | (.... - 1371)              |
|                        |                            |_Margareta of ZÄHRINGEN __+
|                        |                              (.... - 1367) m 1345      
|_Matilde of ZÄHRINGEN _|
  (.... - 1425) m 1376   |
                         |                             _John III SPONHEIM ________+
                         |                            | (1315 - 1398)             
                         |_Matilde of SPONHEIM _______|
                                                      |
                                                      |___________________________