Pour un autre, non
- Born circa 1214
- Deceased in 1279, at the approximate age of 64 years
Parents
- Guillaume II de Montfort (c. 1170 - 1235), chevalier, seigneur de Montfort
- Nine de Rostrenen (c. 1180 - )
Family
- Married with Josselin II de La Roche-Bernard (c. 1200 - 1266), chevalier, baron de La Roche-Bernard, without issue.
- Married with Alain de Montauban
- Married with Josselin de Rohan, écuyer, seigneur de Noyal