- Born in 1095
- Deceased on September 17, 1148, at the approximate age of 52 years
Parents
- Alain IV de Bretagne, Alain de Cornouaille (1060 - 1119), duc de Bretagne
- Ermengarde d'Anjou (1068 - 1146)
Family
- Married in 1112, with Mathilde de Normandie, Mathilde d'Angleterre, issuing
