Bertha, Duchess of Brittany


Bertha of Cornouaille (fl. 1125-55), also known as Bertha of Brittany (Breton: Berthe Breizh), was hereditary Duchess of Brittany between 1148 until her death and Dowager Countess of Richmond. Bertha was the elder daughter of Conan III of Brittany by Maude, the illegitimate daughter of King Henry I of England.[1] She was the last member of the Breton House of Cornouaille to reign over Brittany.

Contents

Life


Bertha was the daughter of Duke Conan III of Brittany. She married the son of Stephen of Treguier, Alan the Black[2] and she lived in England with Alan until his death in 1146. Alan would eventually become Earl of Richmond. After Alan's death she returned to Brittany as Dowager Countess of Richmond and eventually married Odo II, Viscount of Porhoët.[3] When her father Duke Conan III died, on his deathbed Conan III renounced Bertha's brother Hoèl as heir,[2] and designated Bertha as his heiress. On Conan III's death she became hereditary Duchess of Brittany.[4]

Family


In her first marriage, by 1138, Bertha was married to Alan le Noir [a]

Bertha and Alan had three children:

Bertha married her second husband, Odo, Viscount of Porhoet in about 1148.[2][6] Bertha and Odo had three children:

Succession


Bertha died between 1158 and 1164, and with her death the ducal throne passed to her son Conan. [c]

Footnotes


  1. ^ Alan le Noir was Count of Penthièvre. He was created 1st Earl of Richmond by Stephen of England for his support against the dispossessed Empress Matilda during the English Civil War.[5] The marriage between Bertha and Alan may have been intended to bring Brittany into the English Civil War on the side of Stephen.
  2. ^ Everard states Eudo and Bertha had only one daughter, Adelaide.[8]
  3. ^ War broke out between Bertha's son Conan IV, Duke of Brittany and her second husband Odo. Odo may have made a compact with his brother-in-law, Hoel of Nantes to divide Brittany between them. However in late 1156 Conan IV was able to defeat Odo and secure his maternal inheritance.

Notes


  1. ^ Bryan 2016, p. 173.
  2. ^ a b c Warren 1977, p. 75.
  3. ^ Dunbabin 1985, p. 387.
  4. ^ a b Everard 2004, p. 149.
  5. ^ Cokayne, G. E., edited by H. A. Doubleday, Geoffrey H. White, & Lord Howard de Walden, The Complete Peerage, London, 1945, vol. x, p. 788.
  6. ^ Everard 2004, p. 32.
  7. ^ Vincent 2007, p. 331.
  8. ^ a b Everard 2004, p. 46.

References


Bertha, Duchess of Brittany
House of Cornouaille
Born: c. 1114 Died: 1156
Regnal titles
Preceded by
Conan III
Duchess of Brittany
1148–1156
Succeeded by
Conan IV







Categories: 12th-century deaths | 12th-century dukes of Brittany | 12th-century women rulers | 12th-century Breton women | Duchesses of Brittany | Dukes of Brittany




Information as of: 20.06.2021 09:19:38 CEST

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