William Harrison (18 April 1534 – 24 April 1593) was an English clergyman, whose Description of England was produced as part of the publishing venture of a group of London stationers who produced Raphael Holinshed's Chronicles (London 1577). His contribution to Holinshed's work drew heavily on the earlier work of John Leland.
William Harrison was born in London, in the parish of St. Thomas the Apostle, to John and Anne Harrison. As a boy, Harrison attended St Paul's School and the Westminster School of Alexander Nowell. Raised in Protestant circles, Harrison entered Christ Church, Oxford and in 1560 was awarded his bachelor's degree. During the reign of Queen Mary I, Christ Church became a centre of Catholic support, and Harrison converted to Catholicism. Harrison claimed that he returned to Protestant belief before Mary's death in 1558 after hearing the words of Cranmer, Ridley, and Latimer, three Protestant martyrs burned at the stake in Oxford.
On 15 February 1559, prior to the award of his bachelor's degree at Oxford, Harrison was instituted as the rector of Radwinter in Essex, by the appointment of Lord Cobham, who owned the right, and to whom he was also household chaplain. The living brought with it an income of £40 a year. Despite being well known to posterity for his description of England, at this time he had only travelled within a small compass in the south of England.