William Swynderby (sometimes spelled Swinderby) and Walter Brute were active exponents of Lollard beliefs in the last 20 years of the 14th Century. Swynderby was burned at the stake for his faith in 1401 at Smithfield, London.

G. M. Trevelyan, while not entirely sympathetic, gives a glimpse of the views of Brute and Swynderby on page 325 of his book England in the Age of Wycliffe, © 1909:

Another Lollard of the neighbourhood was a man named Walter Brute, of Welsh parentage but educated at Oxford, where he had written theological works in support of Wycliffe. He was Swynderby’s friend and companion and adhered to all his teaching. Like Swynderby, he hid from the ecclesiastical officers and sent a manuscript into court as his only answer to the Bishop’s summons.

This strange piece has been fortunately preserved for us at length. It is full of Scripture phrases, applied in the strained and mystical sense which we associate with later Puritanism, though it really derives its origin from the style of theological controversies older far than the Lollards themselves.

Rome is the daughter of Babylon, “the great whore sitting upon many waters with whom the kings of the earth have committed fornication.” “With her enchantments, witchcraft and Simon Magus merchandise the whole world is infected and seduced.” Brute prophecies her fall in the language of the Revelation. The pope is the beast ascending out of the earth having two horns like unto a lamb, who compels “small and great, rich and poor, to worship the beast and to take his mark in their forehead and on their hands.”

It is easy to perceive, after reading such phrases, one reason why the Bishop objected to the study of the Bible by the common people.