In this volume, The Fathers of the Church returns to the Christian Latin writers of the Iberian Peninsula, hitherto represented only by Orosius (Vol. 50) and Prudentius (Vols. 43, 52).

What is now Portugal embraces Braga, the see-city of Martin, Pannonian-born missionary. While abbot of nearby Dumium, Martin had a pupil Paschasius, whose Questions and Answers of the Greek Fathers has never before been translated complete in any language. To what is now Spain belongs the third author in the volume, Leander, future bishop of Seville, where he was succeeded by his more famous and more prolific brother, Isidore. As with Paschasius, the works of Leander of Seville and of Martin of Braga are translated complete, many for the first time. The subjects range widely and include ethics (with the doctrine sometimes coming from Seneca or other pre-Christian writers), pastoral and ascetical theology, monastic discipline, liturgy, and the computation of the date of Easter.