Even if this is true, ol' Pete was STILL teaching ERROR later!!!
But when Cephas [Peter] came to Antioch, I resisted him to the face, because he stood condemned. For before certain ones came from James, he ate with the Gentiles; but when they came, he drew back and separated himself, fearing them that were of the circumcision [the Jews].
And the rest of the Jews dissembled likewise with him; insomuch that even Barnabas was carried away with their dissimulation.
But when I saw that they walked not uprightly according to the truth of the gospel, I said unto Cephas before them all, "If you, being a Jew, live as do the Gentiles, and not as do the Jews, why do you compel the Gentiles to live as do the Jews?”
Galatians 2:11-14
Poor Ignatius!