Meaning and information about Beaufort, What does Beaufort mean? Beaufort means 'Henry VI, Part 1' Thomas Beaufort, Duke of Exeter, great-uncle to king Henry VI, Bishop of Winchester, and afterwards, in 'Henry VI, Part 2', Cardinal Beaufort. Cardinal. 'Henry VI, Part 1' John Beaufort, Earl of Somerset, afterwards Duke. Find similar names like Beaufort.