John Mark
Mark 14:71ESV·traditional attribution

But he began to invoke a curse on himself and to swear, “I do not know this man of whom you speak.”

Matthew Henry Presbyterian @wholebiblehenry

We have here the story of Peter's denying Christ. 1. It began in keeping at a distance from him. Peter had followed afar off (Mar 14:54), and now was beneath in the palace, at the lower end of the hall.

Commenting on Mark 14:66-72