1340-1400. English poet, author of The Canterbury Tales about 1387, a collection of tales told by pilgrims on their way to the Thomas a Becket shrine. He was the most influential English poet of the Middle Ages. Chaucer's other work includes the French-influenced Romance of the Rose and an adaptation of Boccaccio's Troilus and Criseyde. Chaucer was born in London. Taken prisoner in the French wars, he had to be ransomed by Edward III 1360. He married Philippa Roet 1366, becoming in later life the brother-in-law of John of Gaunt. He achieved various appointments and was sent on missions to Italy (where he may have met Boccaccio and Petrarch), France, and Flanders. His early work showed formal French influence, as in his adaptation of the French allegorical poem on courtly love, Romance of the Rose; more mature works reflected the influence of Italian realism, as in his long narrative poem Troilus and Criseyde, adapted from Boccaccio. In The Canterbury Tales he showed his own genius for metre and characterization.