| Charles II le Chauve - King of the Franks | Church donor in 845. |
| Guillaume Le Maire - Bishop of Angers | Consecrate the high altar in 1300. |
| Mathurin Bluet - Royal entrepreneur | Expertise of degradations in 1770. |
| Michel Prieur du Parray - Geometer | Sets the estimate for 1772. |
| Charles Joly-Leterme - Head of Work | Restorations in 1850. |
| Célestin Port - History | Study Gallo-Roman origins. |