_Alfonso IX IVREA ____+
                                             | (1171 - 1230)        
                       _Ferdinand III IVREA _|
                      | (1199 - 1252)        |
                      |                      |_Berengaria of IVREA _+
                      |                        (1179 - 1246)        
 _Ferdinand IVREA ____|
| (1238 - 1264)       |
|                     |                       _Simon of DAMMARTIN __
|                     |                      |                      
|                     |_Jeanne of DAMMARTIN _|
|                       (1220 - 1278)        |
|                                            |_Maria of PONTHIEU ___+
|                                                                   
|
|--John I IVREA 
|  (.... - 1302)
|                                             _Simon V of MONTFORT _+
|                                            | (1170 - 1218)        
|                      _Amaury of MONTFORT __|
|                     | (1192 - 1241)        |
|                     |                      |_Alix of MONTMORENCY _+
|                     |                        (1170 - 1220)        
|_Laura of MONTFORT __|
                      |
                      |                       ______________________
                      |                      |                      
                      |_Beatrix of VIENNOIS _|
                                             |
                                             |______________________