Catherine of Thouars

Catherine of Thouars was the daughter of Constance, Duchess of Brittany and Countess of Richmond, and her third husband Guy of Thouars. She was the first wife of André III, Baron of Vitré.


Catherine was the second daughter of Constance, Duchess of Brittany, and Guy of Thouars. Her mother died soon after she was born. According to several French historians, Catherine had a twin sister, Margaret, and their mother is said to have died because of a difficult delivery.[1][2][3][4][5][6][7][8] After her mother's death, her father married Eustachie of Chemillé, and had two sons, Peter and Thomas.

Catherine was the younger half-sister of Eleanor, Matilda and Arthur, Constance and Geoffrey of England's children, the sister of Alix and maybe Margaret, and the elder half-sister of Peter and Thomas of Chemillé, Guy and Eustachie of Chemillé's sons.

Union and issue

In 1212, Catherine married André III, Baron of Vitré, whose father had been Constance's ally. They had three children:[9]


  1. According to historians Dom Morice, Dom Charles Taillandiers, Prudence-Guillaume de Roujoux and Arthur Le Moyne de La Borderie, Constance and Guy had a third daughter, Margaret.
  2. Pierre-Hyacinthe Morice, Histoire ecclésiastique et civile de Bretagne, Tome premier, p. 129 and 150
  3. Charles Taillandier, Histoire ecclésiastique et civile de Bretagne, Tome second, p. IX
  4. Prudence Guillaume de Roujoux, Histoire des rois et des ducs de Bretagne, Tome second, p. 231
  5. According to historians Pierre Daru and François Manet, Constance and Guy had three daughters.
  6. Pierre Daru, Histoire de Bretagne, Tome premier, p. 407
  7. François Manet, Histoire de la Petite-Bretagne, ou Bretagne Armorique, depuis ses premiers habitans connus, Tome second, p. 308
  8. Margaret is called Peter Mauclerc's sister in a 1232 charter, which means that she was either his sister, or his sister-in-law. See Medieval Lands.
  9. Medieval Lands

See also

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