Augustine of Hippo
Catena Aurea · Johannesevangelium 18
And Simon Peter followed Jesus, and so did another disciple: that disciple was known unto the high priest, and went in with Jesus into the palace of the high priest. But Peter stood at the door without. Then went out that other disciple, which was known unto the high priest, and spake unto her that kept the door, and brought in Peter. Then saith the damsel that kept the door unto Peter, Art not thou also one of this man’s disciples? He saith, I am not. And the servants and officers stood there, who had made a fire of coals; for it was cold: and they warmed themselves: and Peter stood with them, and warmed himself.
(Tr. cxiii) Who that other disciple was we cannot hastily decide, as his name is not told us. John however is wont to signify himself by this expression, with the addition of, whom Jesus loved. Perhaps therefore he is the one.