_Herman III ZÄHRINGEN __+
                                                | (1105 - 1159) m 1134    
                        _Herman IV ZÄHRINGEN __|
                       | (1135 - 1190)          |
                       |                        |_Bertha of METZ _________+
                       |                          (.... - 1162) m 1134    
 _Herman V ZÄHRINGEN _|
| (.... - 1242)        |
|                      |                         _________________________
|                      |                        |                         
|                      |_Bertha of TÜBINGEN ___|
|                                               |
|                                               |_________________________
|                                                                         
|
|--Rudolf I ZÄHRINGEN 
|  (1230 - 1288)
|                                                _Henry III WELF _________+
|                                               | (1129 - 1195)           
|                       _Henry V WELF __________|
|                      | (1173 - 1227) m 1193   |
|                      |                        |_Matilda of PLANTAGENET _+
|                      |                          (1155 - 1189)           
|_Irmengard of WELF ___|
  (1200 - 1259)        |
                       |                         _Conrad HOHENSTAUFEN ____+
                       |                        | (1135 - 1195)           
                       |_Agnes of HOHENSTAUFEN _|
                         (1176 - 1204) m 1193   |
                                                |_Irmengard of HENNEBERG _+