The Feast of St. Luke, Apostle, Evangelist and Martyr
is today. There is information on him here.

St. Luke differed from his fellow-evangelists and fellow-disciples in having received the advantages of (what is called) a liberal education. In this respect he resembled St. Paul, who, with equal accomplishments appears to have possessed even more learning. He is said to have been a native of Antioch, a city celebrated for the refined habits and cultivated intellect of its inhabitants; and his profession was that of a physician or surgeon, which of itself evidences him to have been in point of education something above the generality of men. This is confirmed by the character of his writings, which are superior in composition to any part of the New Testament, excepting some of St. Paul's Epistles.

Venerable John Henry Newman, Parochial and Plain Sermons