Sir Thomas More was an English lawyer, social philosopher, author, statesman and noted Renaissance humanist. He was also a councillor to Henry VIII, and Lord High Chancellor of England from October 1529 to 16 May 1532. More opposed the Protestant Reformation, in particular the theology of Martin Luther and William Tyndale. He also wrote Utopia, published in 1516, about the political system of an imaginary ideal island nation. More opposed the King's separation from the Catholic Church, refusing to acknowledge Henry as Supreme Head of the Church of England and the annulment of his marriage to Catherine of Aragon. After refusing to take the Oath of Supremacy, he was convicted of treason and beheaded.