Berthe DE BRETAGNE
- Born: Nantes, Loire-Atlantique, Anjou/Pays-de-la-Loire, France
- Married (1): Abt 1137, Bretagne, France
- Married (2): 1148 or before
- Died: Between 1158 and 1164, Richmond Castle, North Riding Yorkshire, England
 Research Notes:
The Chronicon Britannico Alter records the death in 1148 of "Conanus Dux Britanniæ" and records that he had disinherited "Hoellus…suum…filium" and that he appointed as his successor "Eudone Vicecomite Porhoëtensi" who had married "sororem eius Bertam". Her first marriage is suggested by the Chronicon Kemperlegiensis which records the death in 1146 of "Alanus Niger, Conani Ducis gener". The undated record of an enquiry relating to the property rights of Henri d´Avaugour states that "le comte Estienne" had three children “Geffroi, Alain et Henri aieul de cest Henri ci-dessus”, adding that Alain was sent to England, was “comte de Richemont”, and on his return married “la fille de Conan comte de Rennes”. 1
Marriage Information:
Berthe married Alain III "le Noir" DE PENTHIÈVRE, 1st Earl of Richmond, son of Cte Étienne DE PENTHIÈVRE & de Richmonte, and Hawise DE GUINGAMPS, about 1137 in Bretagne, France. (Alain III "le Noir" DE PENTHIÈVRE was born before 1100 in Treguier, Cotes-du-Nord, France and died on 15 Sep 1146 in Bégard, Bretagne, France.)
Marriage Information:
Berthe also married Cte Eudes II DE PORHOËT, Duc de Bretagne, son of Vcte Geoffroy DE PORHOËT and Hawise, in 1148 or before. (Eudes II DE PORHOËT was born in Josselin, Morbihan, Bretagne, France and died after 1180 in La Trinite Porhoet, Morbihan, Bretagne, France.)
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