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Thomas Langton, D.Th., D.Cn.L. (died 27 January 1501) was chaplain to King Edward IV, before becoming successively Bishop of St David's, Bishop of Salisbury, Bishop of Winchester, and Archbishop-elect of Canterbury.

Some time before 1476 was made chaplain to King Edward IV. Langton was in high favour with the king, who trusted him much, and sent him on various important embassies. In 1467 he went as ambassador to France, and as king's chaplain was sent to treat with Ferdinand II, king of Aragon, on 24 November 1476. He visited France again on diplomatic business on 30 November 1477, and on 11 August 1478, to conclude the espousals of Edward's daughter Elizabeth and Charles, son of the French king. Two years later he was sent to demand the fulfilment of this marriage treaty, but the prince, now Charles VIII, king of France, refused to carry it out, and the match was broken off.

Meanwhile Langton received much ecclesiastical preferment. In 1478 he was made treasurer of Exeter, prebendary of St. Decuman's, Wells Cathedral,] and about the same time master of St. Julian's Hospital, Southampton, a post which he still retained twenty years later. He was presented on 1 July 1480 to All Hallows Church, Bread Street, and on 14 May 1482 to All Hallows, Lombard Street, City of London, also becoming prebendary of North Kelsey, Lincoln Cathedral, in the next year. Probably by the favour of King Edward V, who granted him the temporalities of the see on 21 May, Langton was advanced in 1483 to the bishopric of St. Davids; the papal bull confirming the election is dated 4 July,[5] and he was consecrated in August or September. Langton's prosperity did not decline with Edward V's deposition. He was sent on an embassy to Rome and to France by King Richard III, who translated him to the bishopric of Salisbury by papal bull dated 8 February 1485. Langton was also elected provost of Queen's College, Oxford, on 6 December 1487, a post which he seems to have retained till 1495. He was a considerable benefactor to the college, where he built some new sets of rooms and enlarged the provost's lodgings. In 1493 King Henry VII transferred him from Salisbury to Winchester, a see which had been vacant over a year. During the seven years that he was bishop of Winchester Langton started a school in the precincts of the palace, where he had youths trained in grammar and music. He was a good musician himself, used to examine the scholars in person, and encourage them by good words and small rewards. Finally, a proof of his ever-increasing popularity, Langton was elected Archbishop of Canterbury on 22 January 1501, but died of the plague on the 27th, before the confirmation of the deed. He was buried in a marble tomb within 'a very fair chapel' which he had built south of the lady-chapel in Winchester Cathedral.

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