| Role | Name | Name (original language) | Name (translation) | Floruits |
|---|---|---|---|---|
| Addressor | Honorius III, pope (d.1227) | Honorius III | 1216 × 1227 | |
| Addressee | G., cardinal-priest of S. Martino, papal legate | G., Cardinal-priest of St. Martin, legate of the Apostolic See | 1217 × 1217 |