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Dr. Immo Warntjes
Associate Professor, History

Publications and Further Research Outputs

Peer-Reviewed Publications

A Visigothic Computus of AD 722 (Leiden, Universiteitsbibliotheek, VMI 11, 26r"27r) in, editor(s)Immo Warntjes, Tobit Loevenich, Dáibhí Ó Cróinín , Pre-Carolingian Latin computus and its regional contexts: texts, tables, and debates, Brepols, 2023, pp141 - 157, [Immo Warntjes] Book Chapter, 2023 TARA - Full Text

`Computus Einsidlensis" in, editor(s)Lucia Castaldi , La trasmissione dei testi latini del Medioevo / Medieval Latin texts and their transmission, Florence, SISMEL, 2023, pp119 - 125, [Immo Warntjes] Book Chapter, 2023

Computus Monacensis (Munich Computus) in, editor(s)Lucia Castaldi , La trasmissione dei testi latini del Medioevo / Medieval Latin texts and their transmission, Florence, SISMEL, 2023, pp126 - 132, [Immo Warntjes] Book Chapter, 2023

De ratione conputandi in, editor(s)Lucia Castaldi , La trasmissione dei testi latini del Medioevo / Medieval Latin texts and their transmission, Florence, SISMEL, 2023, pp133 - 141, [Immo Warntjes] Book Chapter, 2023

'The origins of the medieval calendar tradition in the Latin West' in, editor(s)Sacha Stern , Calendars in the maling: the origins of late antique and medieval calendars, Leiden / Boston, Brill, 2021, pp129-187 , [Immo Warntjes] Book Chapter, 2021 TARA - Full Text DOI

'Isidore of Seville and the formation of medieval computus in, editor(s)Andrew Fear & Jamie Wood , A companion to Isidore of Seville, Leiden / Boston, Brill, 2020, pp457 - 523, [Immo Warntjes] Book Chapter, 2020 TARA - Full Text

The mechanics of lunar calendars and the modes of calculating Easter, AD 400-1100: contexts and perspectives in, editor(s)Centro italiano di studi sull'alto medioevo , La conoscenza scientifica nell'alto medioevo, Spoleto, Centro italiano di studi sull'alto medioevo, 2020, [Immo Warntjes] Book Chapter, 2020 TARA - Full Text

A.D. 672 - the apex of apocalyptic thought in the early medieval Latin West? in, editor(s)Veronika Wieser et al. , Empire, death, and afterlife in Christianity, Islam, and Buddhism, Berlin, de Gruyter, 2020, pp202 - 233, [Immo Warntjes] Book Chapter, 2020 TARA - Full Text

'The final countdown and the reform of the liturgical calendar in the early Middle Ages' in, editor(s)Matthew Gabriel & James T. Palmer , Apocalypse and reform from Late Antiquity to the Middle Ages, 2019, pp51 - 75, [Immo Warntjes] Book Chapter, 2019 TARA - Full Text

Immo Warntjes, 'The continuation of the Alexandrian Easter table in seventh-century Iberia and its transmission to ninth-century Francia', Revue d'histoire des textes n. s. , 13, 2018, p185 - 194 Journal Article, 2018 TARA - Full Text

Immo Warntjes, 'Introduction: state of research on late antique and early medieval computus', Late Antique calendrical thought and its reception in the early Middle Ages. Proceedings of the 3rd International Conference on the Science of Computus in Ireland and Europe , edited by Immo Warntjes & Dáibhí Ó Cróinín , Brepols, 2017, pp1 - 42 Conference Paper, 2017 TARA - Full Text

Immo Warntjes / Dáibhí Ó Cróinín, Late Antique calendrical thought and its reception in the early Middle Ages, Brepols, 2017 Book, 2017

'Computus' in, editor(s)Victor J. Katz et al. , Sourcebook in the mathematics of medieval Europe and North Africa, Princeton, Princeton University Press, 2016, pp29 - 36, [Immo Warntjes] Book Chapter, 2016

Immo Warntjes, 'Hermann der Lahme und die Zeitrechnung. Bedeutung seiner Computistica und Forschungsperspektiven', Hermann der Lahme: Reichenauer Mönch und Universalgelehrter des 11. Jh. , edited by Felix Heinzer / Thomas Zotz , Kohlhammer, 2016, pp277 - 316 Conference Paper, 2016

David Juste, ''Hermann der Lahme und das Astrolab im Spiegel der neuesten Forschung'', Hermann der Lahme: Reichenauer Mönch und Universalgelehrter des 11. Jahrhunderts, Stuttgart, Kohlhammer, 2016, 273 - 284 Translation, 2016

'Computus as scientific thought in Ireland and the Continent in the early medieval West' in, editor(s)Roy Flechner / Sven Meeder , The Irish in early medieval Europe: identity, culture and religion, New York, Palgrave, 2016, pp158 - 178, [Immo Warntjes] Book Chapter, 2016

'Victorius vs Dionysius: the Irish Easter controversy of AD 689' in, editor(s)Pádraic Moran / Immo Warntjes , Early medieval Ireland and Europe: chronology, contacts, scholarship, Turnhout, Brepols, 2015, pp40 - 96, [Immo Warntjes] Book Chapter, 2015

Pádraic Moran / Immo Warntjes, Early medieval Ireland and Europe: chronology, contacts, scholarship, Turnhout, Brepols, 2015 Book, 2015

Immo Warntjes, 'An Irish eclipse prediction of AD 754: the earliest in the Latin West', Peritia, 25, 2014, p108 - 115 Journal Article, 2014

Immo Warntjes, 'Seventh-century Ireland: the cradle of medieval science?', Music and the stars. Mathematics in medieval Ireland , edited by Mary Kelly / Charles Doherty , Four Courts, 2013, pp44 - 72 Conference Paper, 2013

Immo Warntjes, 'Die Verwendung der Volkssprache in frühmittelalterlichen Klosterschulen', Wissenspaläste. Räume des Wissens in der Vormoderne , edited by Christoph Fasbender / Gesine Mierke , Königshausen & Neumann, 2013, pp153 - 183 Conference Paper, 2013

Immo Warntjes, 'Programmatic double burial (body and heart) of the European high nobility, c.1200-1400. Its origin, geography, and functions', Death at Court, edited by Karl-Heinz Spiess / Immo Warntjes , Harrassowitz, 2012, pp197 - 259 Conference Paper, 2012

Karl-Heinz Spiess / Immo Warntjes, Death at Court, Harrassowitz, 2012 Book, 2012

Immo Warntjes, 'Köln als naturwissenschaftliches Zentrum in der Karolingerzeit: Die frühmittelalterliche Kölner Schule und der Beginn der fränkischen Komputistik', Mittelalterliche Handschriften der Kölner Dombibliothek. Viertes Symposion der Diözesan- und Dombibliothek Köln zu den Dom-Manuskripten , edited by Heinz Finger & Harald Horst , 2012, pp41 - 96 Conference Paper, 2012

Immo Warntjes / Dáibhí Ó Cróinín, The Easter Controversy of Late Antiquity and the early Middle Ages, Brepols, 2011 Book, 2011

Immo Warntjes, 'The Computus Cottonianus of AD 689: a computistical formulary written for Willibrord's Frisian mission', The Easter Controversy of Late Antiquity and the early Middle Ages, edited by Immo Warntjes / Dáibhí Ó Cróinín , Brepols, 2011, pp173 - 212 Conference Paper, 2011

Immo Warntjes, 'Irische Komputistik zwischen Isidor von Sevilla und Beda Venerabilis: Ursprung, karolingische Rezeption und Forschungsperspektiven', Viator, 42 multilingual, 2011, p1 - 32 Journal Article, 2011

Immo Warntjes / Dáibhí Ó Cróinín, Computus and its cultural context in the Latin West, AD 300-1200, Brepols, 2010 Book, 2010

Immo Warntjes, The Munich Computus: text and translation. Irish computistics between Isidore of Seville and the Venerable Bede and its reception in Carolingian times, Stuttgart, Steiner, 2010 Book, 2010

Immo Warntjes, 'The argumenta of Dionysius Exiguus and their early recensions', Computus and its cultural context in the Latin West, AD 300-1200, edited by Immo Warntjes / Dáibhí Ó Cróinín , Brepols, 2010, pp40 - 111 Conference Paper, 2010

Immo Warntjes, 'A newly discovered prologue of AD 699 to the Easter table of Victorius of Aquitaine in an unknown Sirmond manuscript', Peritia, 21, 2010, p254 - 283 Journal Article, 2010

Immo Warntjes, 'The role of the church in early Irish regnal succession - The case of Iona', L'Irlanda e gli Irlandesi nell'alto medioevo , edited by Settimane di Studio del Centro italiano di studi sull'alto medioevo , Settimane di Studio del Centro italiano di studi sull'alto medioevo, 2010, pp155 - 213 Conference Paper, 2010

Immo Warntjes, 'The earliest occurrence of Old English gerīm and its Anglo-Irish computistical context', Anglia, 127, 2009, p91 - 105 Journal Article, 2009

Jacopo Bisagni / Immo Warntjes, 'The early Old Irish material in the newly discovered Computus Einsidlensis (ca. AD 700)', Ériu, 58, 2008, p77 - 105 Journal Article, 2008

Immo Warntjes, 'The Munich Computus and the 84 (14)-year Easter reckoning', Proceedings of the Royal Irish Academy C, 107C, 2007, p31 - 85 Journal Article, 2007

Jacopo Bisagni / Immo Warntjes, 'Latin and Old Irish in the Munich Computus: A reassessment and further evidence', Ériu, 57, 2007, p1 - 33 Journal Article, 2007

Immo Warntjes, 'A newly discovered Irish Computus: Computus Einsidlensis', Peritia, 20, 2006, p61 - 64 Journal Article, 2006

Immo Warntjes, 'Regnal succession in early medieval Ireland', Journal of Medieval History, 30, 2004, p377 - 410 Journal Article, 2004

Immo Warntjes, 'The alternation of the kingship of Tara 734-944', Peritia, 17, 2003, p394 - 432 Journal Article, 2003

Non-Peer-Reviewed Publications

Die Mission und der Osterstreit im Frühmittelalter in, editor(s)Christoph Stiegemann et al. , CREDO - Christianisierung Europas im Mittelalter, Band II: Katalog, Paderborn, 2013, pp262 , [Immo Warntjes] Book Chapter, 2013

Recognition

Awards and Honours

Irish Research Council Laureate Award for the project 'IFCE - The Irish Foundations of Carolingian Europe: the case of calendrical science' (562,527.50 Euro) 2018-2022

Trinity Trust (1,500 Euro) 2018

Trinity Long Room Hub Research Incentive Scheme (3,000 Euro) 2017

Trinity Visiting Professorship and Fellowship Benefection Fund (500 Euro) 2017

Memberships

Member of the editorial board of the series Knowledge, Scholarship, and Science in the Middle Ages (Brepols) 2020

Member of the editorial board of Peritia: Journal of the Medieval Academy of Ireland 2015

Secretary of the Ulster Society for Irish Historical Studies 2014 – 2016