Isabel
- Yes, date unknownDrag or scroll to see more of the chart.
| John 3rd Lord Marmion | |
| D: | Abt 1360 |
| Dsp | |
| John Marmion | |
| D: | 1387 |
| Dsp | |
| Sir Robert Grey, later Marmion | |
| D: | Yes, date unknown |
| Lora De St. Quentin | |
| D: | Yes, date unknown |
| Maud De Grey | |
| D: | Yes, date unknown |
| John De Botetourt | |
| D: | Yes, date unknown |
| Avice Marmion | |
| D: | Yes, date unknown |
| John (2nd Lord of Rotherfield) De Grey | |
| B: | 9 Oct 1300 |
| D: | 1359 |
| Maude (of Tattershall) Bernake | |
| D: | 10 Apr 1419 |
| Ralph VI 1st Baron Cromwell | |
| M: | Bef 20 Jun 1366 |
| D: | 27 Aug 1398 |
| Joan Marnion | |
| D: | Yes, date unknown |
| John (of Tattershall) Bernake | |
| D: | Yes, date unknown |
| John (of Tanfield Etc) 2nd Baron Marnion | |
| B: | Abt 1292 |
| D: | 30 Apr 1335 |
| Maud Furinvalle | |
| D: | Yes, date unknown |
| Isabel | |
| D: | Yes, date unknown |
| John (of Tanfield Etc) 1st Lord Marmion | |
| D: | Bef 7 May 1322 |