Question: Who is Thomas Chaucer's aunt?
Sentence (from "Philippa Roet"): Philippa de Roet (1346 – c. 1387) (also known as Philippa Pan or Philippa Chaucer) was the sister of Katherine Swynford, third wife of John of Gaunt, Duke of Lancaster (a son of King Edward III) and was the wife of the poet Geoffrey Chaucer.
Relevant evidence: Yes