| Geffroy Boterel - Founding Count | Dona the priory in Marmoutiers in 1084 |
| Bernard de Saint-Venant - Abbé de Marmoutiers | Lamballe visit around 1084 |
| Thomas Cornillet - Treasurer | Name engraved on the bell tower (1555) |
| Jean Lesne - Carpenter | Author of the porch in 1519 |
| Dominique Lefebvre-Desforges - Painter (XVIII) | Author of two paintings (1766) |
| Marc du Rufflay - Sculptor (XVIIe) | Co-author of the altarpiece (1667) |