He was the elder of twins, his younger brother being the later viscount William Raymond. After their birth, in light of the conflict in Béarn over the succession, Mary fled with them to the monastery of Santa Cruz de Volvestre.
As the elder twin, he had a younger brother who would become later viscount William Raymond. Following their birth during the succession disputes in Béarn, Mary relocated them to the Santa Cruz de Volvestre monastery for protection.