William Marmion (c. 1461 â 1529) of Adwell was an English gentleman who served as one of the Members of Parliament for Gloucester in 1491.
He was the son of William Marmion of Henley-on-Thames, Steward of Dorchester Abbey and Recorder of Oxford.
William Marmion was elected to Parliament on 17 October 1491.
He was the grandfather of John Marmion MP for Cricklade in 1558.