Patrick Arthur Sheldon Hadley (5 March 1899 – 17 December 1973) was a British composer.
Patrick Sheldon Hadley was born on 5 March 1899 in Cambridge. His father, William Sheldon Hadley, was at that time a fellow of Pembroke College. His mother, Edith Jane, was the daughter of the Revd Robert Foster, chaplain to the Royal Hibernian Military School in Dublin.
Patrick attended St Ronan's Preparatory School at West Worthing, London and Winchester College. However the First World War interrupted his education. He enlisted in the army and was commissioned as a second lieutenant in the Royal Field Artillery. He managed to survive unscathed until the last weeks of the war, when he received an injury necessitating the below knee amputation of his right leg. This profoundly damaged his confidence and also caused him to perhaps drink more than was wise; he was in constant pain, for which alcohol provided some relief.
Patrick's elder brother Peyton Sheldon Hadley, a former pupil of Charterhouse School, who served in the infantry, was also wounded in the closing months of the War. He was invalided home to convalesce, but died of pneumonia that October. A memorial to Peyton is found in the Charterhouse School Chapel.
After the war Patrick went up to Pembroke College, Cambridge, where by now his father was Master. He was fortunate to study with both Charles Wood and the English composer Cyril Rootham. Hadley was awarded B.Mus. in 1922, and an MA in 1925. He then went to the Royal College of Music in London. Here he came under the influence of Ralph Vaughan Williams for composition and Adrian Boult and Malcolm Sargent for conducting. Eric Weatherell notes that Hadley's contemporaries at the RCM included Constant Lambert and Gordon Jacob. He won the Sullivan prize for composition: at that time the sum of 5 shillings.