|Olympic medal record|
|Men's field hockey|
|Gold||1920 Antwerp||Team competition|
Born at Headington, Oxfordshire, the only son of Charles Abdy Marcon, Marcon was educated at Lancing and at Oriel College, Oxford. On 14 September 1914, only a few days after the outset of the First World War, he was commissioned as a second lieutenant into the Oxfordshire and Buckinghamshire Light Infantry. Following the war he became a schoolmaster at Cranleigh. He was a Royal Air Force chaplain from 1943 to 1945, with the rank of Squadron Leader, and ended his career as Vicar of Tenterden in Kent, where he died on 17 November 1959.
At Lancing, Marcon played in the cricket 1st XI in 1907-1908. He was a University of Oxford field hockey blue in 1910, 1911, 1912, and 1913, in his final year captaining the team, and went on to play hockey for England, gaining twenty-three caps. Representing Great Britain in the 1920 Summer Olympics he won an gold medal.