Abbot of the Abgar Abby on Mount Olympus in Bithynia (modern Turkey).
- Book of Saints, by the Monks of Ramsgate
- La fête des prénoms
- Our Sunday Visitor’s Encyclopedia of Saints
- Roman Martyrology
- Santi e Beati
- “Saint Eustratius of Olympus“. CatholicSaints.Info. 9 January 2013. Web. 26 October 2016. <>