1193 - 1245 (52 years)
| 9th Baron Percy and 2nd Baron Percy of Alnwick Sir Henry de Percy, III | |
| B: | 6 Feb 1301 |
| Leconfield, Yorkshire, England | |
| D: | 26 Feb 1352 |
| Warkworth, Northumberland, England | |
 | Idoine de Clifford 1300-1365 |
| Idoine de Clifford | |
| B: | 1300 |
| Clifford, Herefordshire, England | |
| D: | 24 Aug 1365 |
| Yorkshire, England | |
| 1st Baron Percy Sir Henry de Percy, II 1273-1314 |
| 1st Baron Percy Sir Henry de Percy, II | |
| B: | Mar 1273 |
| Petworth, Sussex, England | |
| D: | Oct 1314 |
| Alnwick, Northumberland, England | |
| Eleanor FitzAlan 1282-1328 |
| Eleanor FitzAlan | |
| B: | 1282 |
| Arundel, Sussex, England | |
| D: | Aug 1328 |
| England | |
| Sir Henry de Percy, I 1228-1272 |
| Sir Henry de Percy, I | |
| B: | 1228 |
| Northumberland, England | |
| D: | 9 Aug 1272 |
| Yorkshire, England | |
| Eleanor de Warrenne 1251-1282 |
| Eleanor de Warrenne | |
| B: | 1251 |
| England | |
| D: | 1282 |
| Yorkshire, England | |
|
| Sir William de Percy 1193-1245 |
| Sir William de Percy | |
| B: | 1193 |
| Northumberland, England | |
| D: | 28 Jul 1245 |
| Hartlepool, Durham, England | |
| Eleanor de Baliol 1206-1281 |
| Eleanor de Baliol | |
| B: | 1206 |
| Angus, Scotland | |
| D: | 22 Nov 1281 |
| Yorkshire, England | |
We make every effort to document our research. There is a lot of information that I do not have, and I know there are mistakes in this tree. My feelings will not be hurt if you give me corrections or additional information, especially if you can provide sources for the information.
