Beatrix DE THIERN, Cts de Chalon-sur-Saône
- Born: Chalon-sur-Saône, Saône-et-Loire, Bourgogne, France
- Married (1): Abt 1186
- Married (2): Before 1200
- Died: 7 Apr 1227, Tournus, Saône-et-Loire, France
- Buried: Abbaye de la Ferté-sur-Grosne, Saône-et-Loire, France
 Also called Beatrice DE CHALON.
Research Notes:
The necrology of Saint-Vincent confirms that Guillaume's successor was his daughter when it records the death "III Non Jan" of "W Cabilonensis comes", adding "et pro filia sua comitissa". Her first marriage is confirmed by the charter dated 1227 under which "Simon de Joinville, comme mari de Béatrix, fille d'Etienne comte d'Auxonne et de Béatrix comtesse de Chalon" swore homage to the duke of Burgundy for the château de Marnay. The primary source which confirms her second marriage has not been identified.
She succeeded her father in 1203 as Ctss de Chalon. “Beatrix cometissa Cabilonensis” made an agreement with the abbey of Autun Saint-Martin relating to “mansis in territorio de Chenovis” by charter dated Aug 1226.
The necrology of Saint-Vincent records the death "VII Id Apr" of "Beatrix nobilis comitissa Cabilonensis". The necrology of Maizières records the death "VII Id Apr" of "Beatricis comitisse Cabilonensis". 1
Marriage Information:
Beatrix married Cte Étienne III D' AUXONNE, son of Cte Étienne II D' AUXONNE and Judith DE LORRAINE, about 1186. (Étienne III D' AUXONNE was born before Oct 1172 in Auxonne, Cote d'Or, Bourgogne, France and died on 16 Mar 1240/1 in Auxerre, Yonne, Bourgogne, France.)
Marriage Information:
Beatrix also married Guillaume III DES BARRES, Seigneur d'Oissery, de Saint-Pathus et de Silly, son of Guillaume II DES BARRES, Comte de Rochefort Seigneur d’Oissery et de la Ferté-Alais, and Amice DE BRÉTEUIL, Countess of Leicester, before 1200. (Guillaume III DES BARRES was born between 1185 and 1190 and died on 15 Nov 1249 in Nicosia, Cyprus.)
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