Noun
confessio (plural confessiones)
(law) A confession; a defense of one's faith, or a confession of guilt.
Chaucer's colleague and friend John Gower wrote his Confessio Amantis on a direct commission from Richard, although he later grew disenchanted with the king. Source: Internet
This reference was later edited out of Gower's Confessio Amantis and it was suggested by one editor citation that this was done because of ill feeling between them, but it is likely due simply to stylistic concerns. Source: Internet