_Henry III PLANTAGENET ___+
                                               | (1207 - 1272) m 1236     
                       _Edmund PLANTAGENET ____|
                      | (1244 - 1296) m 1275   |
                      |                        |_Eleanor of BARCELONA ____+
                      |                          (1223 - 1291) m 1236     
 _Henry PLANTAGENET __|
| (1281 - 1345) m 1296|
|                     |                         _Robert I ARTOIS _________+
|                     |                        | (1216 - 1249) m 1237     
|                     |_Blanche of ARTOIS _____|
|                       (1248 - 1302) m 1275   |
|                                              |_Matilda of REGINAR ______+
|                                                (1224 - 1288) m 1237     
|
|--Maud of LANCASTER 
|  (1310 - 1377)
|                                               __________________________
|                                              |                          
|                      _Patrick of CHAWORTH ___|
|                     |                        |
|                     |                        |__________________________
|                     |                                                   
|_Maud CHAWORTH ______|
  (1281 - 1322) m 1296|
                      |                         _William IV of BEAUCHAMP _+
                      |                        | (1238 - 1298)            
                      |_Isabella of BEAUCHAMP _|
                        (1263 - 1306)          |
                                               |_Maud FITZJOHN ___________+
                                                 (1238 - 1301)