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
Christianity in the 14th century because of the Western Schism excited wars between princes, uprisings among the peasants, and widespread concern over corruption in the Church. A new nationalism also challenged the relatively internationalist medieval world. The first of a series of disruptive and new perspectives came from John Wycliffe at Oxford University, then from Jan Hus at the University of Prague. The Catholic Church officially concluded this debate at the Council of Constance (1414–1417). The conclave condemned Jan Hus, who was executed by burning in spite of a promise of safe-conduct. At the command of Pope Martin V, Wycliffe was posthumously exhumed and burned