_Rudolf I ZÄHRINGEN ____+
                                                        | (1230 - 1288) m 1257    
                            _Hesso ZÄHRINGEN __________|
                           | (1268 - 1296)              |
                           |                            |_Kunigunde of EBERSTEIN _
                           |                              (1230 - 1284) m 1257    
 _Rudolf Hesso ZÄHRINGEN _|
| (1290 - 1335)            |
|                          |                             _________________________
|                          |                            |                         
|                          |_Adelaide of RIENECK _______|
|                                                       |
|                                                       |_________________________
|                                                                                 
|
|--Margareta of ZÄHRINGEN 
|  (.... - 1367)
|                                                        _Hugh III IVREA _________+
|                                                       | (1220 - 1266)           
|                           _Reginald IVREA ____________|
|                          | (.... - 1321)              |
|                          |                            |_Adelaide of ANDECHS ____+
|                          |                              (.... - 1278)           
|_Joanna of IVREA _________|
  (1293 - 1349)            |
                           |                             _________________________
                           |                            |                         
                           |_Guillemette of MONTFAUCON _|
                             (1260 - 1317)              |
                                                        |_________________________