| Partner: | Henry de ST CLAIR (c. 1140- ) | |
| Partner: | (unknown) | |
| Children: | Alan de ST CLAIR (c. 1195- ) | |
| Name: | Henry de ST CLAIR | |
| Sex: | Male | |
| Father: | - | |
| Mother: | - | |
| Birth | c. 1140 | |
| Name: | Alan de ST CLAIR | |
| Sex: | Male | |
| Spouse: | Matilda ( - ) | |
| Birth | c. 1195 | |
The St.Clairs of Herdmanston are a more ancient establishment in Scotland than the St.Clairs of Roslyn, Earls of Orkney, but they don't seem to be related.
In 1162 got charter of lands of Herdmanston, East Lothian.