Apollonius (Ancient Greek: Απολλώνιος) was a Christian of ancient Rome who was executed in the 2nd century, during the reign of the Roman emperor Commodus. He is said to have been a Roman senator. At his trial he mounted a defense of Christianity in the Roman senate, which was afterwards translated into Greek and inserted by church historian Eusebius in his history of the Christian martyrs, but is now lost.
Nikephoros I of Constantinople confuses this Apollonius with the Apollonius who wrote against the Cataphryges.
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Apollonius (martyr) Wikipedia(Text) CC BY-SA