Thomas Chestre was the author of a 14th-century Middle English romance Sir Launfal, a verse romance of 1045 lines based ultimately on Marie de France's Breton lay Lanval. He was possibly also the author of the 2200-line Libeaus Desconus, a story of Sir Gawain's son Gingalain based upon similar traditions to those that inspired Renaut de Beaujeu's late-12th-century or early-13th-century Old French romance Le Bel Inconnu, and also possibly of a Middle English retelling of the mid-13th-century Old French romance Octavian.[1] Geoffrey Chaucer parodied Libeaus Desconus, among other Middle English romances, in his Canterbury Tale of Sir Thopas.[2][3]