
1) Bishop in Gaul 2) Gallo-Roman saint 3) Latin-language writer
Found on
https://www.crosswordclues.com/clue/orientius

Saint Orientius was a Christian Latin poet of the fifth century. == Biography and work == He wrote the elegiac poem Commonitorium of 1036 verses (divided into two books) describing the way to heaven, with warnings against its hindrances. He was a Gaul (II, 184), who had been converted after a life of sin (I, 405 sq.), was evidently an experienced ...
Found on
http://en.wikipedia.org/wiki/Orientius
No exact match found.