He was born in November 1896 in St. Marylebone district of London. He succeeded to the Barony on 30 July 1919 on the death of his father. He owned the Crichel House estate in Dorset.
He married Lady Mary Sibell Ashley-Cooper, daughter of Anthony Ashley-Cooper, 9th Earl of Shaftesbury, on 27 November 1928. They had one child: Hon. Mary Anna Sibell Elizabeth Sturt (b. 1929, d. 2010) who later fought the Government and won, leading to the resignation of a Minister, in the Crichel Down Affair.
Alington may well be most notable for having dated Tallulah Bankhead in the 1920s. Alington was described as “well cultivated, bisexual, with sensuous, meaty lips, a distant, antic charm, a history of mysterious disappearances, and a streak of cruelty.” His bisexuality was well known. He was a friend of the Polish composer Karol Szymanowski who dedicated his highly sensuous Songs of an infatuated Muezzin Op.42 to the handsome young Englishman, on their publication in 1922.
He had no male heir upon his death, so the title became extinct. The Crichel estate passed to his 11-year-old daughter Mary, who later married Commander George (known as “Toby”) Marten.