Agnès was born in 1180, the daughter of Noël de Derval and Marie de Rostrenen. The place is not known.
Her husband was Eudes de Coëtlogon. They were married, but the date and place have not been found. They had no known children.
| Event | Date | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|
| Birth | 1180 |
|