Events
Date of Birth: about 1070.
Place of Birth: probably Angers.
The date and place are given by Livingstone.
Date of Death: 1 June 1147.
Place of Death: Brittany.
The date is given by the Complete Peerage (10:780). 1147 and the place are given by Livingston. Other sources suggest that Ermengarde died in Jerusalem and was buried in Redon.
Relationships
Father: Fulk IV of Anjou.
Mother: Hildegarde de Baugency.
These relationships are given by Baldwin, and by Livingstone, who states that the daughter of Lancelin de Baugency was named Ermengarde (not Hildegarde).
supposed Spouse: William IX of Aquitaine.
It is disputed whether this marriage ever took place.
Spouse: Alan Fergant, duke of Brittany.
This relationship is given by Baldwin, by Livingstone, and by Everard.
Children:
(Complete source citations for facts about the children on this page are currently outside of the scope of this project.)
Geoffrey.
Conan III (died 17 September 1148), duke of Brittany married Maud, illegitimate daughter of Henry I of England.
Hawise married (I) Baldwin VII, count of Flanders; married (2) Geoffrey, vicomte of Porhoët.
References
Baldwin, Stewart. “Foulques (Fulk, Fulco) IV ‘le Rechin’” in The Henry Project.
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).
Everard, J.A. Brittany and the Angevins: Province and Empire 1158-1203 (Cambridge U.P., 2000).
Livingstone, Amy. “‘Daughter of Fulk, Glory of Brittany’: Countess Ermengarde of Brittany (.c 1170-1147) in Anglo-Norman Studies XL (2017).