| Role | Name | Name (original language) | Name (translation) | Floruits |
|---|---|---|---|---|
| Addressor | Stephen, steward, clerk, canon of Aberdeen | Stephanus | Stephen, clerk, procurator of dean and chapter of Aberdeen | 1240 × 1244 |
| Addressor | Richard, master, official of Aberdeen | Riccardus | Richard, clerk, procurator of dean and chapter of Aberdeen | 1240 × 1244 |
| Addressee | Gregory IX, pope (d.1241) | 1227 × 1241 |