_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) m 1203   
|                         _Henry II BABENBERG __|
|                        | (1208 - 1228) m 1225 |
|                        |                      |_Theodora ANGELOS ______+
|                        |                        (1190 - 1246) m 1203   
|_Gertrude of BABENBERG _|
  (1226 - 1288) m 1248   |
                         |                       _Hermann I LUDOVING ____+
                         |                      | (1165 - 1217)          
                         |_Agnes of LUDOVING ___|
                           (1205 - 1246) m 1225 |
                                                |_Sophia of WITTELSBACH _+
                                                  (1170 - 1238)