| Role | Name | Name (original language) | Name (translation) | Floruits |
|---|---|---|---|---|
| Addressor | Boniface VIII, pope (d.1303) | 1295 × 1302 | ||
| Addressee | Clergy and people of Argyll | clero et populo civitatis et diocesis Ergadiensis | clergy and people of community and diocese of Argyll | 1300 × 1300 |