These holy martyrs, scourged and beheaded, during the persecutions of the Third Century, were commemorated by Pope Damasus with the following inscription: “The kingdom of heaven holds thee, O Protus, and thither dost thou follow him, O valiant Hyacinth, robed in the purple of thy blood. They were brothers and were unconquered in spirit. Protus first won his crown, but Hyacinth equally deserved the palm.”

(Source: The New Roman Missal, Rev. F. X. Lasance)