William (1st Baron Leyburn) De Leyburn
- Bef 1310Drag or scroll to see more of the chart.
| William 3rd Lord De Say 1314-Yes, date unknown |
| William 3rd Lord De Say | |
| B: | 17 Jun 1314 |
| D: | Yes, date unknown |
 | Beatrice De Brewes -Yes, date unknown |
| Beatrice De Brewes | |
| D: | Yes, date unknown |
| Idonea De Say -Abt 1384 |
| Idonea De Say | |
| D: | Abt 1384 |
| John (3rd Baron Clinton of Maxtock) De Clinton | |
| D: | Sep 1398 |
| Elizabeth De Saye -Yes, date unknown |
| Elizabeth De Saye | |
| D: | Yes, date unknown |
| Thomas Or John De Aldone -Yes, date unknown |
| Thomas Or John De Aldone | |
| D: | Yes, date unknown |
| Joan De Say -Yes, date unknown |
| Joan De Say | |
| D: | Yes, date unknown |
| Stephen De Valoines -Yes, date unknown |
| Stephen De Valoines | |
| D: | Yes, date unknown |
| William (Sir) Fiennes 1332-1359 |
| William (Sir) Fiennes | |
| B: | 2 Feb 1331-1332 |
| M: | 12 Nov 1351 |
| D: | 30 Nov 1359 |
| Geoffery 2nd Lord De Say Abt 1305-1359 |
| Geoffery 2nd Lord De Say | |
| B: | Abt 1305 |
| D: | 26 Jun 1359 |
| Maud (of Warwick) De Beauchamp | |
| D: | 28 Jul 1367 |
| Roger De Saye -Yes, date unknown |
| Roger De Saye | |
| D: | Yes, date unknown |
| Ralph De Saye -Yes, date unknown |
| Ralph De Saye | |
| D: | Yes, date unknown |
| Idonia De Leyburn -Yes, date unknown |
| Idonia De Leyburn | |
| D: | Yes, date unknown |
| Geoffery 1st Lord De Say 1279-Bef 1322 |
| Geoffery 1st Lord De Say | |
| B: | 1279 |
| D: | Bef 3 Mar 1322 |
| Elizabeth Hastings -Yes, date unknown |
| Elizabeth Hastings | |
| D: | Yes, date unknown |
| Roger (1st Lord Grey of Ruthin) Grey | |
| D: | 6 Mar 1352-1353 |
| Alice Hastings -Yes, date unknown |
| Alice Hastings | |
| D: | Yes, date unknown |
| Thomas (Sir) Cotton -Yes, date unknown |
| Thomas (Sir) Cotton | |
| D: | Yes, date unknown |
| Laurence (1st Earl of Pembroke, 3rd Lord) Hastings | |
| B: | 20 Mar 1318-1319 |
| D: | 30 Aug 1348 |
| Agnes (of March) De Mortimer | |
| D: | 21 Jul 1368 |
| Juliana De Lybourne -1327 |
| Juliana De Lybourne | |
| D: | 1 Nov 1327 |
| John (of Abergavenny) 2nd Baron Hastings 1286-1325 |
| John (of Abergavenny) 2nd Baron Hastings | |
| B: | 29 Sep 1286 |
| D: | 20 Jan 1324-1325 |
| Thomas Le Blount -Yes, date unknown |
| Thomas Le Blount | |
| M: | 1326 |
| D: | Yes, date unknown |
| Elizabeth (of Huntingdon) De Clinton -Yes, date unknown |
| Elizabeth (of Huntingdon) De Clinton | |
| D: | Yes, date unknown |
| Sir John (of Sprotborough) Fitzwilliam 1327-1385 |
| Sir John (of Sprotborough) Fitzwilliam | |
| B: | 1327 |
| D: | 1385 |
| William (1st Earl of Huntingdon) De Clinton Abt 1304-1354 |
| William (1st Earl of Huntingdon) De Clinton | |
| B: | Abt 1304 |
| M: | 1327 |
| D: | 25 Aug 1354 |
| Thomas (Sir) De Leybourne | |
| D: | 30 May 1307 |
| Alice De Toeni Abt 1284-1324 |
| Alice De Toeni | |
| B: | Abt 1284 |
| D: | 1 Jan 1323-1324 |
|
| William (1st Baron Leyburn) De Leyburn -Bef 1310 |
| William (1st Baron Leyburn) De Leyburn | |
| D: | Bef 12 Mar 1310 |
| Juliane De Sandwich -1329 |
| Juliane De Sandwich | |
| D: | 1329 |