[1] Harcourt was born in London,[2] the fourth and final child but only son born to Lewis Harcourt (1863–1922) and Mary Ethel Burns (1874–1961), an American heiress who in 1918 was appointed a Dame Commander of the Order of the British Empire.
[3] Doris Harcourt, a socialite and member of the Bright Young Things, was his eldest sister.
[1] During the Second World War, Harcourt served with the Queen's Own Oxfordshire Hussars, the 63rd (Oxford Yeomanry) Anti-Tank Regiment Royal Artillery.
[1] He was appointed a Member of the Order of the British Empire (MBE), Military Division, in February 1943.
[14] He died in Chelsea, London, aged 70, at which point the Harcourt Viscountcy again became extinct.
[1] The manor house and the remainder of the estate of Stanton Harcourt passed to his eldest daughter Elizabeth.