_Henry VII HENNEBERG ___+
                                               | (1352 - 1405) m 1376   
                         _William I HENNEBERG _|
                        | (1384 - 1426) m 1413 |
                        |                      |_Matilde of ZÄHRINGEN _+
                        |                        (.... - 1425) m 1376   
 _Henry VIII HENNEBERG _|
| (.... - 1347)         |
|                       |                       _Otto I WELF ___________+
|                       |                      | (1330 - 1394)          
|                       |_Anna of WELF ________|
|                         (1387 - 1426) m 1413 |
|                                              |_Margaret of JÜLICH ___
|                                                                       
|
|--Catherine of HENNEBERG 
|  (1334 - 1397)
|                                               _Otto V ASCANIA ________+
|                                              | (1246 - 1298)          
|                        _Herman ASCANIA ______|
|                       | (1275 - 1307) m 1295 |
|                       |                      |_Jutta of HENNEBERG ____+
|                       |                        (.... - 1295)          
|_Jutta of ASCANIA _____|
  (1297 - 1353)         |
                        |                       _Albert I HABSBURG _____+
                        |                      | (1255 - 1308)          
                        |_Anne of HABSBURG ____|
                          (1275 - 1327) m 1295 |
                                               |_Elizabeth of GORIZIA __
                                                 (1262 - 1312)