The Naming Of Peter

Invenit hic primum fratrem suum Simonem, et dicit ei: Invenimus Messiam, quod est interpretatum Christus. Et adduxit eum ad Jesum. Et adduxit eum ad Jesum. Intuitus autem eum Jesus, dixit: Tu es Simon, filius Jona; tu vocaberis Cephas, quod interpretatur Petrus. Quaeritur de hoc quod dicitur: Tu vocaberis Cephas, utrum hoc nomen ei tunc imponat. Quod non videtur: 1 Per interlinearem Nondum imponit ei nomen, sed praesignat. 2 Item Marci tertio dicitur, quod Dominus vocavit duodecim; et tunc imposuit Simoni nomen Petrus. 3 Item Matthaei decimo sexto dicitur, quod tunc imposuit, quando confessus fuit. Respondetur communiter, quod hoc nomen Petrus hic fuit praesignatum, Marci tertio impositum, Matthaei decimo sexto confimatum. Sed Augustinus huic solutioni contradicit dicens, quod hoc nomen fuit Petro impositum, quando ab Andrea ductus est ad Christum; et Beda similiter dicit super Marci tertio, quod non tunc impositum, sed ante. Propter hoc dicendum, quod modo fuit ei impositum, sed tamen non fuit vulgatum; quia adhuc non ex tunc appellabatur ab aliis Petrus, sed alio nomine suo priori; sed post, Marci tertio, voluit, quod hoc nomine vocaretur; Matthaei vero decimo sexto haec nominatio celebris redditur per dignitatem nomini congruentem. Sanctus Bonaventura, Commentarius In Evangelium Ioannem, Caput I Source: Here, p488-9

Andrew first found his brother Simon and said to him, 'We have found the Messiah, which means the Christ,' and he led him to Jesus. Having looked at him, Jesus said, 'You are Simon, son of Jonah, and you shall be called Cephas, which means Peter.' 1 It is asked concerning this which is said: 'You shall be called Cephas,' whether this name was given then. It seems not: 1 According to the gloss: 'It was not yet given but foretold.' 2 In the third chapter of Mark it is said that when the Lord called the twelve, that then He gave the name of Peter to Simon. 2 3 In the sixteenth chapter of Matthew is it said that He gave it when Peter confessed. 3 It is commonly answered that this name of Peter was here foretold, in the third chapter of Mark given, and in the sixteenth chapter of Matthew confirmed. But Augustine speaks against this solution, saying that the name of Peter was given when Andrew led him to Christ, 4 and similarly Bede says on the third chapter of Mark, that it was not given then but before. 5 Because of this it must be said that it was given here and yet not as commonly understood, because not from then was he called Peter by others, but by his previous name, then after, in the third chapter of Mark, he wished that he be called by this name, and in the sixteenth chapter of Matthew this celebrated naming is given because of the fitting dignity of the name there. Saint Bonaventura, Commentary On The Gospel Of Saint John, Chapter 1 1 Jn 1.41-42 2 Mk 3.14-16 3 Mt 16.15-18 4 Aug Consensu Evangelist 2.17.34, PL 34.1094 5 Bede Com Mark Lib 1.3, PL 92.159d