Colleen
How the Irish Saved Civilization : The Untold Story of Ireland's Heroic Role from the Fall of Rome to the Rise of Medieval Europe
I think the credit for preserving written records could more fittingly be given to Church archivists on the coast of Ireland during that time period. Erin go Bragh!
Yes, that's what I learned by reading that lovely little book "How the Irish Saved Civilization" by Thomas Cahill.