_Edmund PLANTAGENET ____+
                                            | (1244 - 1296) m 1275   
                       _Henry PLANTAGENET __|
                      | (1281 - 1345) m 1296|
                      |                     |_Blanche of ARTOIS _____+
                      |                       (1248 - 1302) m 1275   
 _Henry PLANTAGENET __|
| (1310 - 1360)       |
|                     |                      _Patrick of CHAWORTH ___
|                     |                     |                        
|                     |_Maud CHAWORTH ______|
|                       (1281 - 1322) m 1296|
|                                           |_Isabella of BEAUCHAMP _+
|                                             (1263 - 1306)          
|
|--Blanche of PLANTAGENET 
|  (1342 - 1368)
|                                            _Louis of BRIENNE ______+
|                                           | (1230 - 1297)          
|                      _Henry of BEAUMONT __|
|                     | (1285 - 1339) m 1310|
|                     |                     |_Agnes of BEAUMONT _____+
|                     |                       (1230 - 1301)          
|_Isabel of BEAUMONT _|
  (1315 - 1360)       |
                      |                      _Alexander COMYN _______+
                      |                     | (.... - 1308)          
                      |_Alice of COMYN _____|
                        (1291 - 1349) m 1310|
                                            |_Joan LE LATIMER _______