The Untold Story of Ireland’s Heroic Role from the Fall of Rome to the Rise of Medieval Europ e- By Thomas Cahill, 1995
Researcher Thomas Cahill uses his education and experiences in the Church and the Classics as he shows that the Irish were critical in preserving Western Civilization in the Classics at a time in which the Huns and Germanics – Visigoths, Franks, Angles, Saxons, Ostrogothsm, and others – wanted to destroy it.
Irish monks preserved of Roman and Greek texts during the fall of the Roman Empire. it was the Irish that carefully copied the texts by hand in illuminated manuscript, a lengthy and worthy process, and added annotations in the margins. Each monk added what he knew from his own education, whether it referenced languages, history, customs, traditions, or whatever else he could add for the edification of new readers. Read more about this and see some illustrations at the link above.