Oldcastle Revolt religious beliefs were considerably influenced by Lollard cleric William Swynderby, who preached in Almeley during his youth. Lollardy was a politico-religious movement initiated by prominent theologian John Wycliffe in the 1370s during his service in the University of Oxford. Lollard beliefs were outlined in the 1395 The Twelve Conclusions of the Lollards, which dealt with their opposition to capital punishment, rejection of religious celibacy, and belief that members of the Clergy should be held accountable to civil laws. The Conclusions also rejected pilgrimages, ornamentation of churches, and religious images because these were said to take away from the true nature
Lollardy undertaken by Church and state which drove Lollardy underground. One such measure was the 1410 burning at the stake of John Badby, a layman and craftsman who refused to renounce his Lollardy. He was the first layman to suffer capital punishment in England for the crime of heresy. John Oldcastle, a close friend of Henry V of England and the basis for Falstaff in the Shakespearean history "Henry IV, Part 1", was brought to trial in 1413 after evidence of his Lollard beliefs was uncovered. Oldcastle escaped from the Tower of London and organized an insurrection, which included an attempted