Various, Encyclopaedia Britannica, 11th Edition…
“ When, then, Paul proposed, after the Jerusalem council of Acts xv., to revisit with Barnabas the scenes of their joint labours, he naturally demurred to taking Mark with them again, feeling that he could not be relied on should fresh openings demand a new policy. But Barnabas stood by his younger kinsman and “took Mark and sailed away to Cyprus” (xv. 38 seq.) . Barnabas does not reappear, unless we trust the tradition which makes him an evangelist in Alexandria (Clem. Hom. i. 9 seq., cf. the attribution to him of the Alexandrine Epistle of Barnabas) . ”
