The eldest son of Brigadier-General Walter Long (d 1917), Long was educated at Street David"s School, Reigate, and later at Eton on the insistence of his mother, who had remarried in 1921 to Lord Glyn. After his father"s death in 1917, there was tension between his grandfather, Walter Long, 1st Viscount Long and his mother, who refused to allow her son to spend any of his school holidays with him at Rood Ashton House.
Eton College.
Traditionally the Longs were educated at Harrow. During the Second World War, Lord Long fought as a Major with the Coldstream Guards and he himself was killed in action at Uden, Netherlands in 1944. On 14 November 1933, Long married (Frances) Laura Charteris (sister of novelist Hugo Charteris and granddaughter of Hugo Charteris, 11th Earl of Wemyss).
They had one daughter, the Honourable Antoinette (Sara) Frances Sibell Long (born 1934), who married Charles Morrison, second son of the 1st Baron Margadale.
The former Lady Long subsequently married three more times, in 1943 to the 3rd Earl of Dudley, in 1960 to Michael Temple Canfield, and lastly in 1972 to the 10th Duke of Marlborough.
