See also
| Partner: | James SINCLAIR (c. 1360-bef1418) | |
| Partner: | (unknown) | |
| Children: | James SINCLAIR ( -aft1436) | |
| Name: | James SINCLAIR | |
| Sex: | Male | |
| Father: | ? SINCLAIR (c. 1330- ) | |
| Mother: | - | |
| Birth | c. 1360 | Longformacus, Berwickshire |
| Occupation | 1st Lord of Longformacus | |
| Death | bef 1418 (age 57-58) | |
| Name: | James SINCLAIR | |
| Sex: | Male | |
| Occupation | 2nd Lord of Longformacus | |
| Death | aft 1436 | |
James is believed to be descended from Gregorie de St Claire, regarded as the brother to Henrie de St Clair the first Lord of Rosslyn.