| Role | Name | Name (original language) | Name (translation) | Floruits |
|---|---|---|---|---|
| Addressor | Unknown, cardinal-priest of S. Marco, papal legate | sancti Marci presbyteri cardinalis | cardinal-priest of S. Marco, legate of the apostolic see | |
| Addressee | Clement III, pope (d.1191) | 1188 × 1190 |