From Foundation for Medieval Genealogy: http://fmg.ac/Projects/MedLands/ENGLISHNOBILITYMEDIEVAL3P-S

JAMES de Saint-Hilaire (-after 1138).  The primary source which confirms his parentage has not yet been identified.   “Jacobi de Sancto Hylario" donated land at Dallenges to Savigny, with the consent of "Aveline uxoris sue, Petri fratris eius", by charter dated 1138, witnessed by "…Georgius nepos Jacobi, et Oliverus, et Ricardus filius Adeline[1045].  m as her second husband, AVELINE, widow of ---, daughter of --- (-after 1138).  “Jacobi de Sancto Hylario" donated land at Dallenges to Savigny, with the consent of "Aveline uxoris sue, Petri fratris eius", by charter dated 1138, witnessed by "…Georgius nepos Jacobi, et Oliverus, et Ricardus filius Adeline[1046].