_Henry de Percy ______+
                                             | (1300 - 1351)        
                        _Henry de Percy _____|
                       | (1320 - 1368) m 1334|
                       |                     |_Idoine de Clifford __+
                       |                       (.... - 1365)        
 _Henry Percy _________|
| (1341 - 1408) m 1358 |
|                      |                      _Henry Plantagenet ___+
|                      |                     | (1281 - 1345) m 1297 
|                      |_Mary Plantagenet ___|
|                        (1321 - 1362) m 1334|
|                                            |_Maud Chaworth _______+
|                                              (1282 - 1322) m 1297 
|
|--Henry 'Hotspur' Percy 
|  (1364 - 1403)
|                                             _Randolph de Neville _+
|                                            | (1262 - 1331)        
|                       _Ralph de Neville ___|
|                      | (1291 - 1367) m 1326|
|                      |                     |_Eupheme FitzRoger ___+
|                      |                                            
|_Margaret de Neville _|
  (.... - 1372) m 1358 |
                       |                      _Hugh de Audley ______+
                       |                     |                      
                       |_Alice de Audley ____|
                         (.... - 1373) m 1326|
                                             |_Isolt de Mortimer ___+