________________________________
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                           _________________________________|
                          |                                 |
                          |                                 |________________________________
                          |                                                                  
 _Ralph MORTIMER _________|
| (1198 - 1246)           |
|                         |                                  ________________________________
|                         |                                 |                                
|                         |_________________________________|
|                                                           |
|                                                           |________________________________
|                                                                                            
|
|--Roger MORTIMER 
|  (1231 - 1282)
|                                                            _Iorwerth ap OWAIN ABERFFRAW ___+
|                                                           | (1130 - 1174)                  
|                          _Llewelyn ap Iorwerth ABERFFRAW _|
|                         | (1173 - 1240)                   |
|                         |                                 |_Margred ferch Madog MATHRAFAL _+
|                         |                                   (1150 - 1198)                  
|_Gwladys verch LLEWELYN _|
  (1194 - 1251)           |
                          |                                  _John Lackland PLANTAGENET _____+
                          |                                 | (1166 - 1216)                  
                          |_Joan of PLANTAGENET ____________|
                            (1188 - 1236)                   |
                                                            |_Clemence PINEL ________________