Sir John Langstrother (died 1471) wasTreasurer of England,^[1]prior of theKnights of St John in England,^[2] and Preceptor of Balsall.^[3]

A son of Thomas Langstrother of Crosswaite, he was by 1463 a councillor of the Yorkist kingEdward IV. He was an administrator of the Knights of St John of Jerusalem and on 9 March 1469 was unanimously chosen as Prior of England, the Order's chief officer in the kingdom. Following the defeat of Edward's supporters by theEarl of Warwick on 26 July 1469 at theBattle of Edgecote Moor he was appointedLord High Treasurer by the short-lived regime of theDuke of Clarence and Warwick, but was dismissed by Edward when he regained power in mid-September. He was reinstated in October 1470 as Treasurer andWarden of the Mint after the temporary re-accession ofHenry VI, who had been restored with the help of Clarence and Warwick. Langstrother's tenures as Lord High Treasurer and Warden of the Mint occurred during theGreat Bullion Famine and theGreat Slump in England.

After the Yorkist victory at theBattle of Tewkesbury on 4 May 1471, where he had shared command of the Lancastrian centre, he soughtsanctuary inTewkesbury Abbey but was taken out and executed in Tewkesbury town centre two days later.^[1][4][5] He was buried in the Order's hospital of St John atClerkenwell.

• The Crusades
• HM Treasury

• Griffiths, R.A. "Langstrother [Longstrother], Sir John (d. 1471)".Oxford Dictionary of National Biography (online ed.). Oxford University Press.doi:10.1093/ref:odnb/16996. (Subscription orUK public library membership required.)

• Bedford, William Kirkpatrick Riland, 1826–1905; Holbeche, Richard, b.1850archive.orgThe Order of the Hospital of St. John of Jerusalem; being a history of the English Hospitallers of St. John, their rise and progress (1902) London F.E. Robinson and co

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