John Wycliffe was the leader of What country?

John Wycliffe was not a leader of a country; he was an English theologian and precursor to the Protestant Reformation. He is best known for his role in translating The Bible into English and for advocating for reforms within the Church. Wycliffe's teachings and writings challenged the authority of the Church and promoted the idea of scripture as the primary source of Christian belief. His efforts laid the groundwork for later reformers and movements in England.