 However, the Reformation was followed by a period of, often fierce, persecution of Catholics.In the "Codex Juris Ecclesiastici Anglicani" (London, 1761) by Edmund Gibson, chaplain to the Archbishop of Canterbury and afterwards Bishop of London, is found a compilation of the various canons and constitutions which had been made for the Church in England at different times.In his introduction to that work, in which he cites the Act Concerning Peter's Pence and Dispensations which also deals with the exercise of papal jurisdiction in England, the author, in touching upon canon law, says as follows