- Hippolytus of Porto
Third century imperial Roman soldier assigned to guardChristian prisoners. Converted by them to the faith. Martyred for assisting at the burial of some his martyredcharges.
Due to a clerical error, Hippolytus was inadvertently listed as two people, Hippolytus of Rome and Hippolytus of Porto, on some calendars. The second entry had the feast day of 22 August. This problem was corrected in the calendar revision of 1969.