[1] He was the eldest son of Archibald Acheson, 4th Earl of Gosford and Lady Louisa Montagu (1854–1944), a Lady-in-Waiting to Queen Alexandra.
He served in the Second Boer War from 1899 to 1900, where he was part of the force sent to relieve Kimberley, during which he was wounded in the Battle of Modder River (November 1899).
[3] From 31 March 1900 he served in a staff appointment as aide-de-camp to Sir George Pretyman, who became Military Governor at Bloemfontein later that year, and in December 1901 he was back with his regiment.
[2] In America, where Lord Gosford lived for twenty-five years, he set up a wine shop at 40 East 50 Street in Manhattan.
[8] On 21 June 1910,[9] then Viscount Acheson was married to Mildred Caroline Carter (1888–1965) at St George's Hanover Square Church.