Ellie Wood Keith Genealogy

Guy I de Thouars, Regent of Brittany

Male Abt 1164 - 1213  (~ 49 years)


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  • Name Guy I de Thouars 
    Suffix Regent of Brittany 
    Born Abt 1164 
    Gender Male 
    History Guy was the son of Geoffroy V, vicomte de Thouars, by an unnamed wife. In 1199 he became the husband of Constance, duchesse de Bretagne, daughter of Conon IV le Petit, duc de Bretagne, earl of Richmond, and Margaret of Scotland.

    In 1196 Constance had been imprisoned by her second husband Rannulfe de Blundeville, 7th earl of Chester, earl of Lincoln. However, the Bretons rose in revolt to protest her imprisonment and Rannulfe was forced to release her. Once home in Brittany she had her marriage to Rannulfe annulled and married Guy, an Occitan noble, in Angers. She and Guy had two daughters, Alix and Catherine, who would both have progeny.

    Between 1198 and her death in 1201, Constance acted as regent for her young son Arthur I, duke of Brittany. Constance had abdicated her ducal throne in Arthur\'s favour in 1194. Once Arthur died in 1203, he was succeeded by his infant maternal sister Alix, daughter of Constance and Guy.

    About 1203 Guy was married Eustachie d\'Argenton, dame de Chemille et de Mortagne, widow of Guillaume V, vicomte d\'Aunay. Their two sons did not have progeny.

    Once his infant daughter Alix inherited the throne, Guy became regent of Brittany. In 1206, however, Philippe II August, king of France, took the regency of Brittany himself, much to the consternation of the Breton nobles. The young Arthur had already sworn fealty to Philippe as king in 1199; Philippe now chose this opportunity to exert direct influence in Brittany.

    In 1213 Philippe arranged for Alix de Thouars to marry Pierre, comte de Dreux. Her father Guy died on 13 April that year, and was buried at Villeneuve Abbey, Nantes with his first wife Constance.  [1
    Died 13 Apr 1213  Chateau de Chemille Find all individuals with events at this location 
    Person ID I3280  Ellie Wood Keith
    Last Modified 2 May 2018 

    Father Geoffroy V, Vicomte de Thouars,   b. Abt 1117,   d. Aft 1173  (Age ~ 57 years) 
    Family ID F2167  Group Sheet  |  Family Chart

    Family Constance, Duchesse de Bretagne,   b. 12 Jun 1161,   d. 4 Sep 1201, Nantes Find all individuals with events at this location  (Age 40 years) 
    Married 1199  Angers Find all individuals with events at this location 
    Children 
    +1. Alix de Thouars, Duchess of Brittany,   b. Abt 1200,   d. 21 Nov 1221  (Age ~ 21 years)
    Last Modified 1 May 2018 
    Family ID F2163  Group Sheet  |  Family Chart

  • Sources 
    1. [S64] Genealogics, Leo Van de Pas, http://www.genealogics.org/getperson.php?personID=I00005244&tree=LEO.