- John Thaumaturgus
Bishop of Polybotum, Phrygia. Defended orthodox teachings and the use of images against emperor Leo the iconoclast. His reputation as a miracle worker was such that the emperor feared to act against him.
- Book of Saints, by the Monks of Ramsgate
- Catholic Online
- Our Sunday Visitor’s Encyclopedia of Saints
- Roman Martyrology, 1914 edition
- “Saint John the Wonder Worker“. CatholicSaints.Info. 25 November 2009. Web. 28 May 2015. <>