In 1264 he was created a supposed baron by de Montfort, which title had no legal validity following the suppression of the revolt.
His father died in 1250 when he was a minor and in about 1252 his wardship and marriage were purchased by William III de Cantilupe (d.1254), 3rd feudal baron of Eaton Bray in Bedfordshire, who married him off to the elder of his two daughters, Joan de Cantilupe (d.1271).
[3] Joan's mother was Eva de Braose, heiress of the Lordship of Abergavenny in Wales.
Her brother Sir George de Cantilupe (1251-1273), Lord of Abergavenny, died aged 22, when Joanna and her sister Millicent became the co-heiresses to his vast estates.
By his wife he had issue including: He and his wife (and son John and daughter-in-law Isabel de Valence) were buried in the Hastings Chapel of the Greyfriars Monastery in Coventry, Warwickshire (founded circa 1234), where were placed their effigies (now lost).