_Henry III REGINAR _____+
                                                    | (1230 - 1260)          
                            _John I REGINAR ________|
                           | (1252 - 1294)          |
                           |                        |_Adelaide of BURGUNDY __+
                           |                          (1233 - 1273)          
 _John II REGINAR _________|
| (1275 - 1312)            |
|                          |                         _Guy DAMPIERRE _________+
|                          |                        | (1226 - 1304)          
|                          |_Margaret of DAMPIERRE _|
|                            (1251 - 1285)          |
|                                                   |_Matilda of BÉTHUNE ___+
|                                                     (.... - 1263)          
|
|--John III REGINAR 
|  (1300 - 1355)
|                                                    _Henry III PLANTAGENET _+
|                                                   | (1207 - 1272) m 1236   
|                           _Edward I PLANTAGENET __|
|                          | (1239 - 1307)          |
|                          |                        |_Eleanor of BARCELONA __+
|                          |                          (1223 - 1291) m 1236   
|_Margaret of PLANTAGENET _|
  (1274 - 1333)            |
                           |                         _Ferdinand III IVREA ___+
                           |                        | (1199 - 1252)          
                           |_Eleanor of IVREA ______|
                             (1239 - 1290)          |
                                                    |_Jeanne of DAMMARTIN ___+
                                                      (1220 - 1278)