Steel-Maitland was born Arthur Steel in Calcutta on 5 April 1876, the son of Colonel Edward Steel and his wife Emmeline, née Drummond. He died of a heart attack while playing golf at Rye, Sussex on 30 March 1935. He was educated at Rugby, and won a scholarship to study classics at Balliol College, Oxford. There he was an outstanding scholar, obtaining first-class results in classical moderations in 1897, literae humaniores in 1899 and jurisprudence in 1900. He also rowed for Oxford and was president of the Oxford Union in 1899. He had intended to make a career in law, but marriage in 1901 to Mary Ramsay-Gibbon-Maitland (which also occasioned his change of name), a wealthy Scots heiress, persuaded him to go into politics instead.
From The Biographical Dictionary of British Economists in Oxford Reference.