| John Grey, 1st Earl of Tankerville, jure uxoris 6th Lord of Powys, KG | |
| B: | Aft. 1384 |
| D: | 22 Mar 1421 |
1384-1415
| Thomas Grey, Sir | |
| B: | 30 Nov 1384 |
| D: | 2 Aug 1415 |
|
1363-1402
| Joan de Mowbray | |
| B: | Abt. 1363 |
| D: | 30 Nov 1402 |
1359-1400
| Thomas Grey, Sir | |
| B: | 1359 |
| D: | Abt. 3 Dec 1400 |