It is stated by Bingham Antiq. X. i. § 4., but without any reference to ancient authors, that “the child of believing parents, as they were baptized in infancy, were admitted Catechumens as soon as they were capable of learning.”  Though the title “Catechumen” was not usually applied to those who had been already baptized, it is probable that such children were admitted to the Lectures addressed to Catechumens both in the earlier and later stage of their preparation:  for it seems to be implied in the passage quoted above from Cat. xv. 18, that admission was not limited to the candidates for Baptism.