The Easter Controversy of Late Antiquity and the Early Middle Ages. Its Manuscripts, Texts, and Tables: Proceedings of the 2nd International Conference on the Science of Computus in Ireland and Europe, Galway, 18-20 July, 2008

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2010 saw the publication of the Proceedings of the 1st International Conference on the Science of Computus in Ireland and Europe, which took place in Galway, 14–16 July, 2006. That first collection, which had the sub-title Computus and its Cultural Context in the Latin West, AD 300–1200, brought together papers by ten of the leading scholars in the field, on subjects ranging from the origins of the Annus Domini to the study of computus in Ireland c. 1100. All those who participated in the Conference were unanimous that a second, follow-up event should be organized, and that duly took place (also in Galway), 18–20 July, 2008. The proceedings of that Conference are published in this current volume. The topics covered in the 2nd Galway Conference ranged from the general – but vitally important – vocabulary of computus (i.e., the technical terminology developed by computists to describe what they were doing) to the origins of the different systems used to calculate the date of Easter in Antiquity and the Early Middle Ages. In addition, there was discussion also of the great debates about Easter, epitomized by the famous Synod of Whitby in AD 664, and the role of well-known individuals in the evolution of computistical knowledge (e.g., Anatolius of Laodicea, the African Augustalis, Sulpicius Severus, Victorius of Aquitaine, Cassiodorus, Dionysius Exiguus, Willibrord, the ninth-century Irish scholar-exile, Dicuil, as well as the late-tenth century Abbo of Fleury). Immo 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, high and late medieval burial practices, and German, English, and Irish political history and culture. Dáibhí Ó Cróinín 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. Front Matter (“Contents”, “Abbreviations”, “Foreword”), p. i Free Access Church politics and the computus: From Milan to the ends of the earth, p. 1 Leofranc Holford-Strevens https://doi.org/10.1484/M.STT-EB.1.100727 The Computus of 455 and the Laterculus of Augustalis, with an appendix on the fractional method of Agriustia, p. 21 Alden Mosshammer https://doi.org/10.1484/M.STT-EB.1.100728 On the arrival of the Latercus in Ireland, p. 48 Daniel Mc Carthy https://doi.org/10.1484/M.STT-EB.1.100729 Ostern zwischen Arianismus und Katholizismus: Zur Komputistik in den Reichen der Westgoten im 6. und 7. Jh., p. 76 Brigitte Englisch https://doi.org/10.1484/M.STT-EB.1.100730 Felix of Squillace and the Dionysiac computus I: Bobbio and Northern Italy (MS Ambrosiana H 150 inf.), p. 110 Luciana Cuppo https://doi.org/10.1484/M.STT-EB.1.100731 The Easter table of Victorius of Aquitaine in Early Medieval England, p. 137 Masako Ohashi https://doi.org/10.1484/M.STT-EB.1.100732 The issue of apostolic authority at the Synod of Whitby, p. 150 David A.E. Pelteret https://doi.org/10.1484/M.STT-EB.1.100733 The Computus Cottonianus of AD 689: A computistical formulary written for Willibrord’s Frisian mission, p. 173 Immo Warntjes https://doi.org/10.1484/M.STT-EB.1.100734 Computus after the Paschal controversy of AD 740, p. 213 James T. Palmer https://doi.org/10.1484/M.STT-EB.1.100735 Dicuils Osterfestalgorithmus im Liber de astronomia, p. 242 Werner Bergmann https://doi.org/10.1484/M.STT-EB.1.100736 Computus in the works of Victorius of Aquitaine and Abbo of Fleury and Ramsey, p. 288 David Howlett https://doi.org/10.1484/M.STT-EB.1.100737 Back Matter (“Bibliography”, “Indices”), p. 325