(4TH CENT.)
[Roman Martyrology. In the ancient Latin Martyrologies is found
the mention of S. Serapion, Monk and Martyr, and many Companions
at Alexandria; but Baronius, instead, inserted in the Modern Roman
Martyrology another and wholly different Serapion, bishop of Thmuis
and Confessor in one of the Arian persecutions, when S. Athanasius
suffered their pursuit. This Serapion is mentioned by S. Athanasius.]
Serapion bishop of Thmuis, in Egypt, a friend of S. Antony the Great,
and a champion of S. Athanasius, wrote an epistle to the great defender
of orthodoxy, and another on the death of Arius, together with
treatises on the titles of the Psalms, and on Manichæism. He is said by
S. Jerome to have suffered for his zeal in the orthodox cause, under
Constantius, when the Arians were in power.