Hippolyte Delehaye

“ A great number of saints of the name of Januarius are mentioned in the martyrologies. The best-known are the Roman martyr (festival, the 10th of July) , whose epitaph was written by Pope Damasus (De Rossi, Bullettino, p. 17, 1863) , and the martyr of Cordova, who forms along with Faustus and Martialis the group designated by Prudentius (Peristephanon, iv. 20) by the name of tres coronae. The festival of these martyrs is celebrated on the 13th of October. ”

“ On these occasions the substance contained in the phial liquefies, and the Neapolitans see in this phenomenon a supernatural manifestation. The “miracle of St Januarius” did not occur before the middle of the 15th century. ”