Saints Protus and Hyacinth were Christian martyrs during the persecution of Emperor Valerian. Protus' name is sometimes spelled Protatius, Proteus, Prothus, Prote, and Proto. His name was corrupted in England as Saint Pratt. Hyacinth is sometimes called by his Latin name Hyacinthus. The day of their annual commemoration is mentioned in the "Depositio Martyrum" on September 11, in the Chronograph of 354.
