Wolsey, Thomas c. 1475-1530. English cleric and politician. In Henry VIII's service from 1509, he became archbishop of York 1514, cardinal and Lord Chancellor in 1515, and began the dissolution of the monasteries. His reluctance to further Henry's divorce from Catherine of Aragon, partly because of his ambition to be pope, led to his downfall in 1529. He was charged with high treason in 1530 but died before being tried.