John Mark
Mark 14:72ESV·traditional attribution

And immediately the rooster crowed a second time. And Peter remembered how Jesus had said to him, “Before the rooster crows twice, you will deny me three times.” And he broke down and wept.

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

Adam Clarke Methodist @methodicalclarke

And when he thought thereon, he wept - Or, he fell a weeping. This Mr. Wakefield thinks comes nearest to the original, επιβαλων εκλαιε. Others think it means the wrapping of his head in the skirts of his garment, through shame and anguish.