From Dom Guéranger's The Liturgical Year.

A FOURTH martyr claims our veneration on this twelfth day of May. Like the three others, he culled his palm at Rome. But whilst they died for the faith at the very commencement of the Christian era, Pancras was not called to the glorious combat till the persecution under Diocletian—the last and greatest effort of pagan Rome against the Church. Our young hero was only fourteen years of age; but he was old enough to be a brave martyr, and he has been honoured by a commemoration in Paschal Time. The venerable Church in the Holy City which is dedicated to him, and which gives a title to one of the Cardinals, was built on the site of the cemetery where his body was buried. The following commemoration is made of him in the Matins of this feast:

Pancratius in Phrygia nobili genere natus, puer quatuordecim annorum Romam venit, Diocletiano et Maximiano imperatoribus: ubi a Pontifice Romano baptizatus, et in fide Christiana eruditus, ob eamdem paulo post comprehensus, quam diis sacrificare constanter renuisset, virili fortitudine datis cervicibus, illustrem martyrii coronam consecutus est: cujus corpus Octavilla matrona noctu sustulit, et unguentis delibutum via Aurelia sepelivit.

Pancras was bom in Phrygia, of a noble family. When but a boy of fourteen, he went to Rome, in the reign of the Emperors Diocletian and Maximian. He there received baptism from the Roman Pontiff, and was instructed in the Christian faith. Shortly afterwards he was seized, as being a Christian; but upon his firmly refusing to offer sacrifice to the gods, he was condemned to be beheaded. He suffered death with manly courage, and obtained the glorious crown of martyrdom. During the night a matron, by name Octavilla, took away his body, and had it buried, after embalming it, on the Aurelian Way.

Divine grace, which called thee to the crown of martyrdom, selected thee, O Pancras, from the distant land of Phrygia, and led thee to the capital of the empire—the centre of every vice and every error of paganism. Thy name, like those of millions of others who were better known to the world, had else been quite forgotten. But now, though thy earthly career was soon ended, the name of Pancras is loved and venerated throughout the whole earth: it is breathed at the altar, in the prayers which accompany the sacrifice of the Lamb. How camest thou, dear youthful martyr, by this celebrity, which will last to the end of the world? It was because, having imitated Jesus' Death by suffering and shedding thy blood for his name, thou hast been made a sharer in the glory of his immortality. In return for the honour we pay thee, deign to aid us by thy protection. Speak of us to Jesus, who is our divine Master, as he was thine. In this vale of our exile, we sing our Alleluia for his Resurrection, which has filled us with hope; obtain for us, by thy prayers, that we may sing Alleluia with thee in heaven, where it will be eternal, and be prompted, not by the gladness of hope, but by the bliss of possession.