| Name | Relationship with Natalie Seiwell | Civil | Canon |
| 24th great-grandfather | XXVI | 26 |
| Mortimer, Anne | 21st great-grandmother | XXIII | 23 |
| Mortimer, Bernard Glendower | 19th great-grandfather | XXI | 21 |
| Mortimer, Isabel | 18th great-grandmother | XX | 20 |
| Morton, Margaret | 13th great-grandmother | XV | 15 |
| 14th great-grandmother | XVI | 16 |
| Moselle, Ermengarde Tours | 39th great-grandmother | XLI | 41 |
| 40th great-grandmother | XLII | 42 |
| Mosely, Charles Helmes | 12th great-granduncle | XVI | 15 |
| 13th great-granduncle | XVII | 16 |
| Mosely, Henry Burnet | 11th great-grandfather | XIII | 13 |
| 12th great-grandfather | XIV | 14 |
| Mosely, Humphrey Sherwood | 14th great-grandfather | XVI | 16 |
| 15th great-grandfather | XVII | 17 |
| Mosely, Nicholas Longmore | 15th great-grandfather | XVII | 17 |
| 16th great-grandfather | XVIII | 18 |
| Mosely, Richard Helmes | 12th great-granduncle | XVI | 15 |
| 13th great-granduncle | XVII | 16 |
| Mosely, William Heigham | 13th great-grandfather | XV | 15 |
| 14th great-grandfather | XVI | 16 |
| Mosely, William Helmes | 12th great-grandfather | XIV | 14 |
| 13th great-grandfather | XV | 15 |
| Mosley, Anne Knott | 10th great-grandmother | XII | 12 |
| 11th great-grandmother | XIII | 13 |
| Mosley, Henry Knott | 10th great-granduncle | XIV | 13 |
| 11th great-granduncle | XV | 14 |
| Mosley, John Knott | 10th great-granduncle | XIV | 13 |
| 11th great-granduncle | XV | 14 |
| Mosley, William Knott | 10th great-granduncle | XIV | 13 |
| 11th great-granduncle | XV | 14 |
| Muir, Adam | 20th great-grandfather | XXII | 22 |
| 22nd great-grandfather | XXIV | 24 |
| 23rd great-grandfather | XXV | 25 |
| 2nd cousin 22 times removed | XXVIII | 25 |
| 2nd cousin 24 times removed | XXX | 27 |
| 2nd cousin 25 times removed | XXXI | 28 |
| Husband of the 2nd cousin 22 times removed | | |
| Husband of the 2nd cousin 24 times removed | | |
| Husband of the 2nd cousin 25 times removed | | |
| Muir, Archibald Comyn | 22nd great-grandfather | XXIV | 24 |
| 24th great-grandfather | XXVI | 26 |
| 22nd great-granduncle | XXVI | 25 |
| 25th great-grandfather | XXVII | 27 |
| 24th great-granduncle | XXVIII | 27 |
| 25th great-granduncle | XXIX | 28 |
| Muir, Gilchrist | 23rd great-grandfather | XXV | 25 |
| 25th great-grandfather | XXVII | 27 |
| 26th great-grandfather | XXVIII | 28 |
| Muir, Reginald | 21st great-granduncle | XXV | 24 |
| 23rd great-granduncle | XXVII | 26 |