Complex sentence: In 1516 he had been made Master of the Rolls; in 1521 he became Dean of Salisbury, in 1522 Bishop of London, and in 1523 keeper of the privy seal.
Split into simpler sentences: In 1516 he had been made Master of the Rolls. In 1521 he became Dean of Salisbury, in 1522 Bishop of London, and in 1523 Keeper of the Privy Seal.