Clement
of Alexandria (~200)
nÒAgain in the same books, Clement gives a tradition of the early presbyters concerning the order of the Gospels in the following manner: He said that those Gospel which contain the genealogies were written first; but the Gospel according to Mark had this occasionÉÓ
nOutlines, cited in Eusebius 6.14.5
nPuts Matthew & Luke earlier than Mark.