Clement (~200)
n the Gospel acc to Mark had this occasion:  When Peter had preached the word publicly in Rome & had declared the Gospel by the Spirit, those who were present — they were many — besought Mark, since he had followed him for a long time & remembered the things that had been spoken, to write out the things that had been said; and when he had done this, he gave the Gospel to those who had asked him.  When Peter learned of it later, he neither obstructed nor commended it.
nPeter is apparently still alive at the time.