The Cistercians do not eat meat... Yet they keep pigs to the number of many thousands, and sell the bacon - though perhaps not quite all of it. The heads, legs, and feet they neither give away, throw away, nor sell. What becomes of them God knows.

The French language Prose Lancelot cycle claims him "Gauthier Map" as an author though this is contradicted by internal evidence; some scholars have suggested he wrote an original lost Lancelot romance that was the source for the later cycle. His death was commemorated on 1 April at Hereford Cathedral. He encountered Thomas Becket before 1162.

Walter Map (born 1140 died c. 1208–1210) was a medieval writer of works written in Latin.