He was s of Malcolm Henry AIRD 1899-1965 (gs of Sir John AIRD 1st Bt 1833-1911) and Joan Meredith 1895-1986 d of Henry Parkman STURGIS c1847-1929 (b USA) of London and his 2nd w (m 17 July 1894, St Michael’s, Mickleham) Marie Eveleen MEREDITH 1871-1933. He m 1967 Mary Elizabeth b 1940 d of Lt-Col Sir William Richard de Bacquencourt DES VOEUX 9th Bt 1911-ka1944 and Jean Margaret Rose 1914-74 d of Lt-Col John Ford ELKINGTON DSO 1866-1944 sometime head of that gentry family of Adbury Holt, and Mary REW 1878-1956, and had a son and a dau as above.