A Man For All Seasons: Thomas More In A Man For All Seasons, Thomas More was found guilty of treason because he refused to support King Henry VIII's decision to divorce his wife, Catherine of Aragon. The King sought this divorce because he wanted to marry his mistress, Anne Boleyne. King Henry contended he was entitled to the divorce because Catherine had been married to Arthur, Henry's older brother. Upon Arthur's death, Catherine was betrothed to Henry. Although King Henry had received prior church approval to marry Catherine, he pointed out to the Pope that according to the Bible, it was wrong to marry your brother's wife. More did not accept King