John Mark
Mark 14:72KJV·traditional attribution
And the second time the cock crew. And Peter called to mind the word that Jesus said unto him, Before the cock crow twice, thou shalt deny me thrice. And when he thought thereon, he wept.
Matthew Henry Presbyterian
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
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.