Baring-Gould’s sources: Commemorated at Puteoli and Naples under the name of Artemas, but in the ancient Martyrology attributed to S. Jerome, he is called Antimasius, a mistake of copyists for Artimasius or Artemas. The Acts are those preserved by the Church of Puteoli, and seem to be founded on others of great antiquity; they exist only in a fragmentary condition, and give no clue to the date of the martyrdom.

Artemas was a pious Christian boy in Puteoli, in the south of Italy. He was sent to school to one Cathageta, a heathen. Out of the abundance of the heart the mouth speaketh, and the boy, filled with faith, spoke of his belief to some of his fellow-scholars. It was soon known among the boys that Artemas was a Christian, and it came to the master's ears. Cathageta lectured and browbeat the little scholar, and threatened him with the rod. "You may whip," said the brave boy; "but you will only whip my faith deeper into me." Then the master, in a rage, shouted to the boys to punish him, and the cruel tiger-cubs, educated to bloodshed by the atrocities of the arena, fell upon him with their iron pens, used for scratching on wax tablets, and stabbed him to death.