Of these four worthies, Athanasius is too well known to need further notice. Gregorius is either Greg. Nazianzen, Bishop of Constantinople (circ. 380) or Greg. of Nyssa, both great champions of the Church against Arianism (not, as the Ball., Greg. Thaumaturgus, Bishop of Neo-Cæsarea, 244–70): Julius was a Bishop of Rome (337–52): an excerpt from one of his letters is printed by the Ball. at the end of this letter as the passage on which Eutyches based his error, though they suspect it (not unnaturally) as being an Apollinarian imposition: Felix is probably no other than the Arian Bishop of Rome, Felix II. (355–8) whose appointment is characterized by Athanasius as effected “by antichristian wickedness,” but who is yet a canonized saint and martyr of the Roman Church (see Schaff’s Hist., vol. ii. p. 371; iii. 635, 6).