On June 11, 1509, 17-year-old Henry VIII married Catherine of Aragon, the Spanish princess who had previously been wed to his late brother, Arthur. Their union began with promise—strengthening England’s alliance with Spain and uniting two respected royal houses. But years later, Catherine’s inability to produce a male heir and Henry’s desire for Anne Boleyn would turn this marriage into the catalyst for England’s break f rom the Catholic Church.