Ranking officer in the imperial army of Constantine the Great. Roman consul. In 330 he retired from his military and political duties, moving to Ostia where he founded a hospital and spent the remainder of his life caring for the sick. In earlier times times he was described as being exiled to Alexandria, and martyred, but this was apparently not the case.
- Book of Saints, by the Monks of Ramsgate
- Catholic Encyclopedia
- New Catholic Dictionary
- Our Sunday Visitor’s Encyclopedia of Saints
- “Saint Gallicanus“. Saints.SQPN.com. 27 July 2013. Web. 5 December 2013. <>