One of a group of 15 Christian soldiers who were tortured and martyred in the persecutions of Diocletian.
- thrown from a boat to drown at sea c.303 at the imperial residence at Nicomedia on the Black Sea
- “Saint Caius of Nicomedia”. Saints.SQPN.com. 23 October 2012. Web. 2 September 2014. <http://saints.sqpn.com/saint-caius-of-nicomedia/>