Mathe de Mastas

Gaston VII of Béarn

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Family

Between 1245 and 1250 Gaston married Mathe de Matha (or Amata of Mastas; died 1270/3), Viscountess of Marsan, daughter of Boson de Mathe, lord of Cognac, and Petronilla of Bigorre. The couple had four children, all daughters:

Constance (died 1310), succeeded in Marsan and Bigorre. Married firstly, on 23 March 1260, to the Aragonese infante Alfonso, son of James the Conqueror, who died 26 March; married secondly, on 15 May 1269, to Henry of Almaine, son of Richard of Cornwall; and married thirdly, in 1279, to Aymon II of Geneva

Margaret, succeeded in Béarn. Married, in 1252, to Roger-Bernard III de Foix

Mathe, married Geraud VI of Armagnac in 1260

Guillelme (or Guillemette; died 1309), affianced in 1270 to Sancho IV of Castile, annulled 1281; married, in 1291, to the Aragonese infante Peter (1275–1296), son of Peter the Great

Widowered, Gaston married again on 2 April 1273 to Beatrice (c. 1237–1310), daughter of Peter II of Savoy and Agnès de Faucigny, and widow of Guigues VII of Viennois

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