Bede the Venerable — as excerpted in the Catena Aurea on Luke 6:12-16

“He not only surnamed Peter first, but long before this, when he was brought by Andrew, it is said, Thou shall be called Cephas, which is by interpretation, a stone (John 1:42.). But Luke, wishing to mention the names of the disciples, since it was necessary to call him Peter, wished shortly to imply that this was not his name before, but the Lord had given it to him.”