| Role | Name | Name (original language) | Name (translation) | Floruits |
|---|---|---|---|---|
| Addressor | Innocent IV, pope (d.1254) | Innocentius | Innocent, bishop, servant of servants of God | 1226 × 1254 |
| Addressee | Albin, bishop of Brechin (d.1269) | Episcopo Brekinensi | bishop of Brechin | 1246 × 1267 |