John of Pontoise (died 1304) was a medieval Bishop of Winchester in the Kingdom of England, serving from 1282 to 1304.

Life

John of Pontoise was from Pontoise in Seine-et-Oise in France, but spent much of his life in England. In 1280, he was briefly Chancellor of the University of Oxford. He was an Archdeacon of Exeter and a papal chaplain before Pope Martin IV provided him to the see of Winchester on 9 June 1282; he was consecrated before 15 June 1282. He was enthroned at Winchester Cathedral in September 1282. In 1303, he helped negotiate the Treaty of Paris that ended the 1294–1303 Gascon War. John of Pontoise died on 4 December 1304.

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