| Role | Name | Name (original language) | Name (translation) | Floruits |
|---|---|---|---|---|
| title-holder | Constantine of Lochore (III), son of Constantine, sheriff | Constantinum de Louchor custodem sue tutorem Johannis filii et heredis domini Alexandri de Blar' | Constantine of Lochore, guardian or tutor of John, son and heir of Sir Alexander of Blair, knight | 1280 × 1305 |