_Edward III PLANTAGENET _+
                                                   | (1312 - 1377) m 1327    
                       _John of Gaunt PLANTAGENET _|
                      | (1339 - 1398)              |
                      |                            |_Philippa of AVESNES ____+
                      |                              (1311 - 1369) m 1327    
 _John BEAUFORT ______|
| (1371 - 1409)       |
|                     |                             _Payne ROET _____________
|                     |                            | (1310 - 1380)           
|                     |_Katherine ROET ____________|
|                       (1350 - 1403)              |
|                                                  |_________________________
|                                                                            
|
|--Margaret of BEAUFORT 
|  (1408 - 1449)
|                                                   _________________________
|                                                  |                         
|                      ____________________________|
|                     |                            |
|                     |                            |_________________________
|                     |                                                      
|_Margaret of HOLAND _|
  (1380 - 1439)       |
                      |                             _________________________
                      |                            |                         
                      |____________________________|
                                                   |
                                                   |_________________________