_Herman IV ZÄHRINGEN __+
                                                 | (1135 - 1190)          
                          _Herman V ZÄHRINGEN __|
                         | (.... - 1242)         |
                         |                       |_Bertha of TüBINGEN ___
                         |                                                
 _Herman VI ZÄHRINGEN __|
| (1226 - 1250) m 1248   |
|                        |                        _Henry V WELF __________+
|                        |                       | (1173 - 1227) m 1193   
|                        |_Irmengard of WELF ____|
|                          (1200 - 1259)         |
|                                                |_Agnes of HOHENSTAUFEN _+
|                                                  (1176 - 1204) m 1193   
|
|--Frederick I ZÄHRINGEN 
|  (1249 - 1268)
|                                                 _Leopold VI BABENBERG __+
|                                                | (1176 - 1230)          
|                         _Henry II BABENBERG ___|
|                        | (1208 - 1228) m 1225  |
|                        |                       |_Theodora of ANGELOS ___
|                        |                         (1180 - 1246)          
|_Gertrude of BABENBERG _|
  (1226 - 1288) m 1248   |
                         |                        _Hermann I LUDOVINGIAN _+
                         |                       | (1165 - 1217)          
                         |_Agnes of LUDOVINGIAN _|
                           (1205 - 1246) m 1225  |
                                                 |_Sophia of WITTELSBACH _+
                                                   (1170 - 1238)