| Male Earl of Mar Duncan |
| Birth | 1180 | |
| Death | 1244 | |
| Burial | ||
| Marriage | ||
| Father | Earl of Mar Gilchrist | F2308 Group Sheet | |
| Mother | ||
| Male + William, of Mar |
| Birth | 1222 | , Aberdeen, Scotland, United Kingdom |
| Death | 25 Jul 1281 | |
| Burial | ||
| Spouse | Elizabeth Comyn | F1972 | |
| Marriage | ||