The Letter of St. Jerome stand as perhaps one of the few literature treasures that have survived late antiquity, along with that of St. Augustine and Plotinus. This first volume incorporates Letters 1 through 50, and are an excellent cross-section of St. Jerome's early theological and ecclesiastical thought.
Apologeticus (Latin: Apologeticum or Apologeticus) is Tertullian's most famous work, consisting of apologetic and polemic. In this work Tertullian defends Christianity, demanding legal toleration and that Christians be treated as all other sects of the Roman Empire. It is in this treatise that one finds the phrase: "the blood of the martyrs is the seed of the Church" (Apologeticus, Chapter 50). There is a similarity of content, if not of purpose, between this work and Tertullian's Ad nationes—published earlier in the same year—and it has been claimed that the latter is a finished draft of Apologeticus. There arises also the question of similarity to Minucius Felix's dialogue Octavius. Some paragraphs are shared by both texts; it is not known which predated the other.
Lebor Gabála Érenn ("The Book of the Taking of Ireland") is a collection of poems and prose narratives that purports to be a history of Ireland and the Irish from the creation of the world to the Middle Ages. There are a number of versions, the earliest of which was compiled by an anonymous writer in the 11th century. It synthesized narratives that had been developing over the foregoing centuries. The Lebor Gabála tells of Ireland being settled (or 'taken') six times by six groups of people: the people of Cessair, the people of Partholón, the people of Nemed, the Fir Bolg, the Tuatha Dé Danann, and the Milesians. The first four groups are wiped out or forced to abandon the island, the fifth group represent Ireland's pagan gods, while the final group represent the Irish people (the Gaels).