With Thomas More's encouragement, King Henry prepares to meet King Francis of France and sign Cardinal Wolsey's peace treaty. Henry had promised the hand of his daughter, Princess Mary, to the Dauphin of France, which caused strife between Henry and his queen, Katherine of Aragon. In France, Thomas Boleyn maneuvers his elder daughter Mary into Henry's bed in an effort to secure favor for the family. The Duke of Buckingham plots against the King, claiming a better right to the throne than Henry Tudor; but his purpose is betrayed by Thomas Boleyn and the Duke is executed. Katherine of Aragon continues to pray for Henry to give her a live, healthy son, but Henry wrestles with the theological problem of having married his brother's wife, and questions whether his lack of sons could be God's punishment. There is much celebration as Lady Elizabeth Blount gives birth to Henry's illegitimate son, to Katherine's pain. When Henry loses interest in Mary Boleyn after a short time, Thomas Boleyn turns to his younger daughter, Anne, to replace her.