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
John Wycliffe whom came to Wycliffe through Saint Augustine, he saw traces of a knowledge of the Trinity, and he championed the doctrine of ideas as against Aristotle. He said that Democritus, Plato, Augustine, and Grosseteste far outranked Aristotle. In Aristotle he missed the provision for the immortality of the soul, and in his ethics the tendency toward the eternal. He was a close follower of Augustine, so much so that he was called "John of Augustine" by his pupils. In some of his teachings, as in "De annihilatione", the influence of Thomas Aquinas can be detected. So far as his relations