Ermengarde of Anjou, ( - ),She is called Ermengarde in northern [French] sources however at least one early southern source calls her Gerberga. Angevins were known to give daughters two names as evidenced by her aunt, called Adelaide-Blanche. See: Bachrach, 'Henry II and the Angevin Tradition', Albion, Vol. 16, No. 2, (1984), p. 117 n. 35; Crisp, 'Consanguinity and the Saint-Aubin Genealogies, Haskins Society Journal 14 (2005), p. 114; also: Bachrach, ""Fulk Nerra, (1993), p. 42. was the Countess of Rennes, Regent of Brittany (992–994) and also Countess of Angoulême.
