See also
| Husband: | James SINCLAIR ( - ) | |
| Wife: | Isabel HOWIESON (c. 1470- ) | |
| Children: | Alexander SINCLAIR ( - ) | |
| Name: | James SINCLAIR | |
| Sex: | Male | |
| Father: | David SINCLAIR ( - ) | |
| Mother: | Elizabeth ( - ) | |
| Occupation | 5th Lord of Longformacus | |
| Name: | Isabel HOWIESON | |
| Sex: | Female | |
| Father: | - | |
| Mother: | - | |
| Birth | c. 1470 | |
| Name: | Alexander SINCLAIR | |
| Sex: | Male | |
| Spouse: | Marion FORMAN ( - ) | |
| Occupation | 6th Lord of Longformacus | |