 Edward granted him Welsh castles, including Carreg Cennen.Giffard was the son of Elias Giffard IV of Brimpsfield, Gloucestershire and his second wife, Alice, sister of John Mautravers, of Lytchett Matravers, Dorset.Giffard married, firstly, Maud de Clifford, daughter of Walter de Clifford, of Clifford, Hertfordshire, and widow of William III Longespée.