_John Lackland PLANTAGENET _+
                                                 | (1166 - 1216) m 1200       
                         _Henry III PLANTAGENET _|
                        | (1207 - 1272) m 1236   |
                        |                        |_Isabella TAILLEFER ________+
                        |                          (1186 - 1246) m 1200       
 _Edward I PLANTAGENET _|
| (1239 - 1307)         |
|                       |                         _Ramon Berenguer IV ARAGON _+
|                       |                        | (1198 - 1245)              
|                       |_Eleanor of BARCELONA __|
|                         (1223 - 1291) m 1236   |
|                                                |_Beatrice of SAVOY _________+
|                                                  (1198 - 1267)              
|
|--Margaret of PLANTAGENET 
|  (1274 - 1333)
|                                                 _Alfonso IX IVREA __________+
|                                                | (1171 - 1230)              
|                        _Ferdinand III IVREA ___|
|                       | (1199 - 1252)          |
|                       |                        |_Berengaria of IVREA _______+
|                       |                          (1179 - 1246)              
|_Eleanor of IVREA _____|
  (1239 - 1290)         |
                        |                         _Simon of DAMMARTIN ________
                        |                        |                            
                        |_Jeanne of DAMMARTIN ___|
                          (1220 - 1278)          |
                                                 |_Maria of PONTHIEU _________+