| Role | Name | Name (original language) | Name (translation) | Floruits |
|---|---|---|---|---|
| Addressor | Thomas of Langford, clerk of John of Brittany | Thomas of Langford, clerk of Sir John of Brittany, earl of Richmond | 1305 × 1305 | |
| Addressee | Edward I, king of England (d.1307) | the king | 1274 × 1312 |