He was s of Maj-Gen Sir Rohan DELACOMBE KCMG KCVO KBE CB DSO 1906-91 of Shrewton Manor, Wilts and Eleanor Joyce CStJ 1915-2009 d of (Robert) Lionel FOSTER c1871-1952 of Egton Manor, Whitby by his 30 Sep 1909 m (St Mary, W Fordington, Dorset) to Eleanor Maud 1872-1944 d of Capt Arthur Edmund MANSEL 1828-1905 (gs of Sir William MANSEL 9th Bt 1739-1804) and Clare Henrietta 1836-1917 d of Hon Arthur LASCELLES 1807-80 (s of 2nd Earl of HAREWOOD 1767-1841, etc) and Caroline Frances 1813-95 d of Sir Richard BROOKE 6th Bt 1785-1865 and his w a dau of Sir Foster CUNLIFFE 3rd Bt 1755-1834 whose wife was a dau of Sir David KINLOCH 5th Bt c1710-1795 of Gilmerton. He m 1970 (Angela) Lucy b 1944 eld d of Maj-Gen Roger Ellis Tudor ST JOHN CB MC 1911-98 (gt gs of 15th Baron ST JOHN OF BLETSO 1811-74) and Rosemary Jean Douglas 1918-2015 d of Ronald VICKERS 1869-1942 (s of the Chairman of the eponymous steel making business, and bro of the husband of a sister of 8th Viscount CHETWYND) by his 16 Dec 1915 m (St Michael, Oxford) to Mildred Katharine 1886-1974 d of Rev Richard Philip Sainsbury HIGGS 1857-1929 by his 15 April 1884 m (Hardenhuish, Wilts) to Ada Lucy HEADLEY 1858-1939, and had three daus as above.