a certain maid
Matthew 26:69
Now Peter sat without in the palace: and a damsel came unto him, saying, Thou also wast with Jesus of Galilee.
Mark 14:6
And Jesus said, Let her alone; why trouble ye her? she hath wrought a good work on me.
Mark 14:17
And in the evening he cometh with the twelve.
Mark 14:66-68
66
And as Peter was beneath in the palace, there cometh one of the maids of the high priest:
67
And when she saw Peter warming himself, she looked upon him, and said, And thou also wast with Jesus of Nazareth.
68
But he denied, saying, I know not, neither understand I what thou sayest. And he went out into the porch; and the cock crew.
John 18:17
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.