Chaucer

Relationship to John of Gaunt

Chaucer was a close friend of John of Gaunt, the wealthy Duke of Lancaster and father of Henry IV, and he served under Lancaster's patronage. Near the end of their lives, Lancaster and Chaucer became brothers-in-law when Lancaster married Katherine Swynford (de Roet) in 1396; she was the sister of Philippa (de) Roet, whom Chaucer had married in 1366.