Geoffrey Berengar, duke of Brittany

Events 

Date of Birth: unknown.

Place of Birth: unknown.

Date of Death: 1008.

Place of Death: unknown.

The date is given by the Complete Peerage (10:779) and by Morin.

Relationships

Father: Conan I, count of Rennes.

This relationship is given by Dubin (genealogical table) and by Livingstone.

Mother: Ermengarde, daughter of Geoffrey Grisgonelle of Anjou.

This relationship is given by Livingstone.

Spouse: Hawise, daughter of Richard I, duke of Normandy.

This relationship is given by the Complete Peerage (10:779).

Children: 

(Complete source citations for facts about the children on this page are currently outside of the scope of this project.)

Alan III (died 1040), duke of Brittany, married Bertha, daughter of Eudo, count of Chartres.

Adela (died 1067), abbess of St. Georges at Rennes.

Eudo (died 7 January 1079), ‘comes Britanniae’, married Orguen.

References

Cokayne, George Edward, and Vicary Gibbs; et al. The complete peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, extant, extinct, or dormant [2nd ed.]. (London: St. Catherine Press, 1910-59).

Dunbabin, Jean. France in the Making: 843-1180 (Oxford U.P. 2nd ed., 2000).

Livingstone, Amy. “Pious Women in a ‘Den of Scorpions’: The Piety and Patronage of the Eleventh-Century Countesses of Brittany” in Historical Reflections v. 43, no. 1 (Spring, 2017).

Morin, Stéphane. Trégor, Goëlo, Penthièvre: Le pouvoir des Comtes de Bretagne du XIe au XIIIe siècle. (Presses universitaires de Rennes, 2010).