Let op: Leeftijd bij trouwen (??-??-1252) lag beneden de 16 jaar (9).
Hij is getrouwd met Margaret de BEARN.
Zij zijn getrouwd in het jaar 1252, hij was toen 9 jaar oud.
Roger-Bernard III (1243 - 3 March 1302) was the Count of Foix from 1265 to his death. He was the son of Roger IV of Foix and Brunissende of Cardona. He entered into conflicts with both Philip III of France and Peter III of Aragon, who held him in captivity for a time. He was nevertheless a distinguished poet and troubadour.
In 1252, Roger-Bernard married Margaret of Montcada, the eldest daughter of Gaston VII of Béarn and Bertha of Bigorre. In his will, Gaston declared Margaret to be his heir, which was generally accepted, though not by his second daughter Mathe and her husband Gerard VI of Armagnac. Later, Gaston declared his third daughter Guillemette the new heir, but when he died in 1290, Roger-Bernard immediately took possession of his counties (May). Roger-Bernard then divided his coat of arms between that of Foix and that of Béarn.
In 1293, after three years of peace, Gerard V finally contested the usurpation of Béarn and began a long war with Roger-Bernard over the rights of their wives. This war lasted until 1377.
When the aforementioned Guillemette donated all her Catalan lands to James II of Aragon in April 1300, Roger-Bernard opposed her and travelled at the head of troops through the pass of the Col de Puymorens. He died at Tarascon-sur-Ariège on 3 March 1302 and was buried in Boulbonne beside his ancestors.
He and Margaret had several children:
Gaston I, his successor
Constance, married (1296) John I de Lévis, lord of Mirepoix
Mathe, married (1294) Bernard IV of Astarac
Margaret (died 1304), married (1291) Jordan V of L'Isle-Jourdain
Brunissende, married (1298) Elias VII of Périgord
SOURCE: Wikipedia