Source.—Gregory's Chronicle in the Collections of a London Citizen (Camden Society), pp. 105, 106.

And that year there was an heretic, that was called John of Badby, that believed not in the Sacrament of the Altar, and he was brought into Smithfield for to be burnt, and bound unto a stake; and Sir Harry Prince of Wales counselled him to hold the very right belief of Holy Church, and he should fail neither lack no good. Also the Chancellor of Oxford, one Master Courteney, informed him in the faith of Holy Church, and the Prior of Saint Bartholomew brought the Holy Sacrament with twelve torches and brought it before him. And it was asked him how that he believed. And he answered and said that he wist well that it was holy bread, and not God's own blessed body. And then was the tonne put over him and fire put unto him; and when he felt the fire he cried mercy. And anon the prince commanded to take away the fire, and it was done so anon. And then the prince asked him if that he would forsake his heresy and believe on the faith of all Holy Church, and he would give him his life and goods enough while he lived; but he would not, but continued forth in his heresy. And then the prince commanded him up to be burnt at once, and so he was. And John Gylott, vynter, he made two weavers to be taken, the which followed the same way of heresy.