D O CroininImmo Warntjes is lecturer in Medieval History at the University of Greifswald (Germany). Besides computistics, his main areas of research include the use of languages in Early Medieval Europe, succession to high offices, and Irish political history. aibhi O Croinin lectures in history at NUI, Galway, where he is the Director of The Foundations of Irish Culture project. His research interests are Ireland, Britain and Europe during the Early Middle Ages, computistics, Medieval Latin Palaeography and Irish traditional music and song. Read More Read Less