AT THE REQUEST OF THE BRETHREN AT ROME
Mark, disciple and interpreter of Peter, according to what he had heard Peter announce, wrote a short Gospel at the request of the brethren at Rome. And when Peter heard this, he approved it, and gave it to be read in the Church by his authority. Then, taking the Gospel which he himself had produced, he went to Egypt, where he was the first to preach Christ at Alexandria, and founded a church there, with such learning and austerity of life, that he compelled all the followers of Christ to imitate him.
PHILO RECORDED WHAT HE HIMSELF HAD SEEN AND DONE AT ALEXANDRIA UNDER THE TEACHING OF MARK
Then Philo, most learned of the Jews, seeing the first Church of Alexandria still under Jewish influence, wrote a book concerning its usages, as it were in praise of his own nation. And as Luke relates that at Jerusalem the faithful had all things in common; so Philo records what he himself had seen and done at Alexandria under the teaching of Mark. He died in the eighth year of the reign of Nero, and was buried at Alexandria, being succeeded by Anianus.
– From the book of St Jerome, Priest, on Ecclesiastical Writers; An Approved English Translation of the Breviarium Romanum, Burns & Oates, London, 1964