Short answers, pulled from the story.
Simon Fish was a 16th-century English Protestant propagandist who died in 1531. He is significant for helping spread William Tyndale's New Testament and for writing Supplication for the Beggars, an anti-clerical pamphlet condemned as heretical on the 24th of May 1530 and considered a precursor to the English Reformation.
Fish argued that the Roman Catholic Church held a disproportionate share of England's wealth, owning one third of its land and receiving one tenth of all farm produce, livestock, and servants' wages, while representing only one four-hundredth of the total population. He also contested the doctrines of purgatory and the sale of indulgences, and accused the clergy of treason and corruption.
Fish wrote the pamphlet during his second exile in Antwerp, where it was probably printed by Joannes Grapheus. According to John Foxe, it arrived in England on the 2nd of February 1529, smuggled across the border despite being prohibited.
Fish was arrested in London on heresy charges but died of bubonic plague in 1531 before he could stand trial.
Richard Hunne was a wealthy Londoner who died in 1514 in the Bishop of London's prison after being seized on heresy charges when he challenged ecclesiastical court jurisdiction. A coroner found signs of foul play suggesting the bishop's chancellor, Dr. Horsey, was responsible, but Dr. Horsey never stood trial because the Bishop of London obtained a royal pardon for him. Fish cited Hunne's case to argue that the Church used heresy charges to persecute those who recognised royal authority over clerical power.
Sir Thomas More wrote The Supplycatyon of Soulys, printed by October 1529, as a direct rebuttal to Fish. More's response was ten times longer than Fish's sixteen-page pamphlet and addressed both its social and economic arguments and its attack on the doctrine of purgatory. More also claimed that Fish eventually recanted.