NIGHTBRINGER | The Arthurian Encyclopedia

Calixtes


A hermit who lived in the White Forest, near the chapel of St. Augustine.

A murderer and robber most of his life, Calixtes repented at the end and spent his last five years as a holy man. Upon his death, Arthur witnessed a battle in which angels triumphed over devils for the man’s soul.


Source
Perlesvaus | Early 13th century