Some of the items listed below are linked to downloads as Adobe PDF documents. You can download Adobe Acrobat Reader for free if your machine doesn't already have it.
Published and forthcoming work
Books (monographs)
Inheriting Rome: the imperial legacy in coinage and culture (Birmingham: the Barber Institute of Fine Arts 2015), a leaflet accompanying my exhibition of the same name.
Rulers and Ruled on the Catalan Frontier, 880-1010: pathways of power, Studies in History (London: Royal Historical Society 2010). A monograph expanded and revised from my doctoral thesis, available to purchase here and here.
Coins in Collections: care and use. A Guide to Best Practice by the COINS Project (Cambridge: Fitzwilliam Museum 2009), main author with assistance from Mark Blackburn, Jo Dillon, Achille Felicetti and Klaus Vondrovec.
Books (edited and co-written)
Richard Verdi, Sarah Beattie, myself, Nicola Kalinsky and Robert Wenley, The Barber Institute of Fine Arts (London: Scala Arts & Heritage, 2017): a new guide to the collections of my erstwhile employers, the Barber Institute of Fine Arts in the University of Birmingham, with contributions from myself as follows: "(Roman) The Pax Romana, AD 41-42" [presentation of a Nemesis denarius of Claudius I, R0943], p. 18; "(Persian) The Shah of Shahs, 4th Century" [presentation of a drachm of Shapur II, S0078], p. 19; and "(Rhodes) St John and the Knights of the Hospital, 15th Century" [presentation of a ducat of the Hospitallers of Rhodes, CR0037], p. 20. Available directly from the publishers or at many and varied art bookshops!
Problems and Possibilities of Early Medieval Charters, edited by myself and Allan Scott McKinley, International Medieval Research 19 (Turnhout: Brepols 2013): a volume of papers from seven years of highly successful sessions run by Allan, myself and Martin Ryan at the Leeds International Medieval Congress, now available in whole here or in parts here! Contains chapters by myself (twice, see below), Martin Ryan, Allan, Erik Niblaeus, Charles West, Arkady Hodge, Antonio Sennis, Charles Insley, Shigeto Kikuchi, Morn Capper, Elina Screen, Alaric Trousdale and Julie Hofmann.
Articles in journals
"Towards a trans-regional approach to early medieval Iberia", with Álvaro Carvajal Castro, André Evangelista Marques, Graham Barrett, Leticia Agúndez San Miguel, Ainoa Castro Correa, Marcos Fernández Ferreiro, David Peterson, Rosa Quetglas Munar, José Carlos Sánchez Pardo, Igor Santos Salazar and Guillermo Tomás Faci in History Compass Vol. 20 (Chichester 2022), e12743, DOI: 10.1111/hic3.12743
"Follis or follaron? The name of the Byzantine coin of 40 nummi" in Acta Numismàtica Vol. 52 (Barcelona 2021), pp. 225-248
"Nuns, Signatures and Literacy in late-Carolingian Catalonia" in Traditio Vol. 74 (Cambridge: Cambridge University Press, 2019), pp. 125-152, DOI: 10.1017/tdo.2019.7
"Ceremony, Charters and Social Memory: Property Transfer Ritual in Early Medieval Catalonia" in Social History Vol. 44 (Abingdon: Taylor Francis, 2019), pp. 275-295, DOI: 10.1080/03071022.2019.1618570
"Outgrowing the Dark Ages: agrarian productivity in Carolingian Europe re-evaluated" in Agricultural History Review Vol. 67 (Reading: University of Reading Press, 2019), pp. 1-28.
"Editorial", with Luca Zavagno and Rebecca Darley, in al-Masāq: Islam and the Medieval Mediterranean Vol. 31, The World of Medieval Islands (Abingdon: Taylor Francis, 2019), pp. 129-139, DOI: 10.1080/09503110.2019.1596645
"Nests of Pirates? 'Islandness' in the Balearic Islands and La Garde-Freinet" in in al-Masāq: Islam and the Medieval Mediterranean Vol. 31, The World of Medieval Islands (Abingdon: Taylor Francis, 2019), pp. 196-222, DOI: 10.1080/09503110.2019.1600101
"Engaging Élites: counts, capital and frontier communities in the ninth and tenth centuries, in Catalonia and elsewhere" in Networks and Neighbours Vol. 2.2 (Binghamton, NY: Networks and Neighbours, 2018 for 2014), pp. 202-230, online at https://nnthejournal.files.wordpress.com/2018/05/nn-2-2-jarrett-engaging-elites1.pdf, last modified 26th May 2018 as of 12th April 2019.
"Middle Byzantine Numismatics in the Light of Franz Füeg's Corpora of Nomismata" in Numismatic Chronicle Vol. 177 (London: Royal Numismatic Society 2018 for 2017), pp. 514-535, online here in PDF
"Views, Comments and Statistics: Gauging and Engaging the Audience of Medievalist Blogging" in E-medieval: teaching, research and the 'net, edd. Orietta Da Rold & Elaine Treharne, Literature Compass Vol. 9.12 (Oxford 2012), pp. 991-995, DOI: 10.1111/lic3.12016.
"Caliph, King or Grandfather: strategies of legitimisation on the Spanish March in the reign of Lothar III" in The Mediaeval Journal Vol. 1.2 (Turnhout: Brepols 2012), pp. 1-21, DOI: 10.1484/J.TMJ.1.102535.
"Archbishop Ató of Osona: false metropolitans on the Marca Hispanica" in Archiv für Diplomatik Vol. 56 (München 2010), pp. 1-41. I have some offprints of this left as well so if you can't get hold of it, once again, get in touch.
"Settling the Kings' Lands: aprisio in Catalonia in perspective" in Early Medieval Europe Vol. 18 (Oxford: Wiley-Blackwell 2010), pp. 320-342, DOI: 10.1111/j.1471-8847.2010.00301.x. I'm forbidden by the copyright agreement from posting this online, because it can be purchased (or viewed if you have a subscription) here, but I am allowed to circulate a PDF privately so if you can't get hold of it, get in touch.
"Currency change in pre-millennial Catalonia: coinage, counts and economics" in Numismatic Chronicle Vol. 169 (London: Royal Numismatic Society 2010 for 2009), pp. 217-243. Proof version online here as PDF. I have loads of offprints of this: if you would like one, contact me.
"Digitizing Numismatics: getting the Fitzwilliam Museum's coins to the world-wide web" in The Heroic Age Vol. 12 (online at http://www.heroicage.org/issues/12/foruma.php, last modified 12 June 2009 as of 17 June 2009).
"The Political Range of Áedán mac Gabráin King of Dál Riata" in Pictish Arts Society Journal Vol. 17 (Brechin: Pictish Arts Society 2008), pp. 3-24.
This paper was first written in 2000 and was originally scheduled to emerge in 2001; as it finally came out it is missing its graphics and its endnotes, and spells my name wrong. A correct version can be downloaded here, with its bibliography here, both files PDF.
"Power over Past and Future: Abbess Emma and the nunnery of Sant Joan de les Abadesses" in Early Medieval Europe Vol. 12 Pt 3 (Oxford: Blackwells 2004 for 2003), pp. 229-258, DOI: 10.1111/j.0963-9462.2004.00128.x.
Winner of the Blackwells/Early Medieval Europe Prize for Best First Published Essay 2004. An electronic copy of the text of this paper is linked here as PDF; the definitive version is available through Wiley-Blackwell's Online Library service.
Conference contributions
"拜占庭帝国的市场交易与阿纳斯塔修斯一世的货币改革", as 乔纳森 加莱特, transl. 张 月 in 王春法 (ed.), 货币与王朝: 国际视野下钱币的影响与改变 ( 北京 2021), pp. 266–276 [Qiáonàsēn jiā láitè, 'Bàizhàntíng dìguó de shìchǎng jiāoyì yǔ ā nà sī tǎ xiū sī yīshì de huòbì gǎigé'/Jonathan Jarrett, 'Market exchange in the Byzantine Empire and the currency reforms of Anastasius I', available in Chinese version (with English footnotes) here and draft English version here
"Coinage in the Western World at the End of the Roman Empire and After: Tradition, Imitation and Innovation" in Sven Günther, Li Qiang, Lin Ying & Claudia Sode (edd.), From Constantinople to Chang'an: Byzantine Gold Coins in the World of Late Antiquity. International Conference in Changchun, China, 23‒26 June 2017, Supplements to the Journal of Ancient Civilizations 8 (Changchun 2021), pp. 31-74, online here in PDF.
"Why did the Byzantine Coinage Turn Concave? Old Suggestions and a New One" in Maria Caccamo Caltabiano (ed.), XV International Numismatic Congress Taormina 2015: Proceedings (Roma: Arbor Sapientiae 2017), PDF Addendum pp. 1-4, online here.
"Poor Tools to Think With: the human space in digital diplomatics" in Antonella Ambrosio, Sébastien Barret & Georg Vogeler (edd.), Digital diplomatics: the computer as a tool for the diplomatist?, Beihefte der Archiv für Diplomatik 14 (München: Archiv für Diplomatik 2014), pp. 291-302
"Centurions, Alcalas and Christiani perversi: Organisation of Society in the pre-Catalan 'Terra de Ningú'" in †A. Deyermond & M. Ryan (ed.), Early Medieval Spain: a symposium, Papers of the Medieval Hispanic Research Seminar 63 (London: Queen Mary University of London 2010), pp. 97-127.
Chapters in edited works
"El comte-marquès Borrell II de Barcelona: Arquitecte involuntari de Catalunya?", trans. by Irene Capdevila Arrizabalaga in Vides catalanes que han fet història, ed. by Borja de Riquer (Barcelona: Edicions 62), pp. 95‒102
"A Likely Story: purpose in narratives from charters of the early medieval Pyrenees" in †Simon Barton & Robert Portass (edd.), Beyond the Reconquista: New Directions in the History of Medieval Iberia (711–1085) (Leiden: Brill, 2020), pp. 123-142
"La fundació de Sant Joan en el context de l'establiment dels comtats catalans", transl. Xavier Costa Badia in Irene Brugués, Coloma Boada & Xavier Costa (edd.), El monestir de Sant Joan: Primer cenobi femení dels comtats catalans (887-1017) (Barcelona: Publicacions de l'Abadia de Montserrat, 2019), pp. 83-107
"Before the Reconquista: frontier relations in medieval Iberia, 718–1031" in Javier Muñoz-Bassols, Laura Lonsdale & Manuel Delgado (edd.), The Routledge Companion to Iberian Studies (London: Routledge 2017), pp. 27-40
"Bovo soldare: A Sacred Cow of Spanish Economic History Re-evaluated" in Rory Naismith, Martin Allen & Elina Screen (edd.), Early Medieval Monetary History: Studies in Memory of Mark Blackburn (Farnham: Ashgate 2014), pp. 187-204
"Introduction" in Jarrett & McKinley, Problems and Possibilities as above, pp. 1-18, DOI: 10.1484/M.IMR-EB.1.101674.
"Comparing the earliest diplomatic culture in Carolingian Catalonia" in Jarrett & McKinley, Problems and Possibilities as above, pp. 89-126, DOI: 10.1484/M.IMR-EB.1.101679.
"Only Typing? Informal Writing, Blogging and the Academy", by myself and Alex Sayf Cummings, in Kristen Nawrotzki & Jack Dougherty (edd.), Writing History in the Digital Age, digitalculturebooks (Detroit: University of Michigan Press 2013), pp. 246-258, online here.
"Bibliography", with Miquel Crusafont, Anna M. Balaguer & Philip Grierson, in Crusafont, Balaguer & Grierson, Medieval European Coinage, with a catalogue of the coins in the Fitzwilliam Museum, 6: the Iberian Peninsula (Cambridge 2013), pp. 590-637.
"Ramiro I and Ramon Berenguer IV", by Miquel Crusafont and myself in Crusafont, Anna M. Balaguer & Philip Grierson, Medieval European Coinage, with a Catalogue of the Coins in the Fitzwilliam Museum, 6: the Iberian Peninsula (Cambridge 2013), pp. 105-108.
"Coinage, Digitization and the World-Wide Web: numismatics and the COINS Project", by myself, Sebastian Zambanini, Reinhold Hüber-Mork and Achille Felicetti, in Brent H. Nelson & Melissa Terras (edd.), Digitizing Medieval and Early Modern Material Culture, New Technologies in Medieval and Renaissance Studies 3 (Tempe: University of Arizona Press 2012), pp. 459-489.
Reviews
Tony Abramson, Coinage in the Northumbrian Landscape and Economy, c. 575–867, BAR British Series 841 (Oxford 2018) in Northern History 59 (Abingdon: Taylor & Francis, 2019), pp. 162-165, DOI: 10.1080/0078172X.2019.1678288
Josep María Salrach, Justícia i poder en Catalunya abans de l'any mil (Vic 2013) in The Medieval Review 14.09.16, online at https://scholarworks.iu.edu/journals/index.php/tmr/article/view/18659/, last modified 6 May 2015 as of 21 July 2019.
Julia Escalona & Andrew Reynolds (edd.), Scale and Scale Change in the Early Middle Ages, The Medieval Countryside 6 (Turnhout: Brepols 2011), in Història agrària 59 (Valencia: Premsa de l'Universitat de València, 2013), pp. 193-197.
Reinhard Härtel, Notarielle und kirchliche Urkunden im frühen und hohen Mittelalter (Wien 2011), in The Medieval Review 12.06.21 (Bloomington: University of Indiana 2012), https://scholarworks.iu.edu/journals/index.php/tmr/article/view/17591/, last modified 13 April 2015 as of 21 July 2019.
Jörn Staecker (ed.), The Reception of Medieval Europe in the Baltic Sea Region. Papers of the XIIth Visby Symposium held at Gotland University, Visby, Acta Visbyensia XII (Visby: Gotland University Press 2009), in Fornvännen: Journal of Swedish Antiquarian Research 2011/1 (Stockholm: the Royal Academy of Letters, History and Antiquities 2011), pp. 65-67.
Donald Scragg (ed.), Edgar, King of the English 959-975, Publications of the Manchester Centre for Anglo-Saxon Studies 8 (Woodbridge: Boydell 2008), in The Heroic Age Vol. 13 (2010), online here.
Kathleen Davis, Periodization and Sovereignty: how ideas of feudalism and secularization govern the politics of time, The Middle Ages (Philadelphia 2008) in Early Medieval Europe Vol. 18 (Oxford: Wiley-Blackwell 2010), pp. 348-349, online for purchase or subscription here.
Stephen D. White, Feuding and Peacemaking in Eleventh-Century France, Variorum Collected Studies Series (Aldershot: Ashgate 2005) in Early Medieval Europe Vol. 15 (Oxford: Blackwells 2007), pp. 124-125, online for purchase or subscription here.
Other output
Doctoral Thesis
Since the publication of my thesis as a monograph (detailed above) is quite different from the submission version of my thesis, and since people have been kind enough to cite that, I have created this page where PDF copies of my thesis chapters can be downloaded.
Exhibitions
I've spent a good deal of my career in museums, which allows one the opportunity to put stuff on display for audiences academic work just doesn't receive. These are the cases (no pun intended) in which I have been involved in that, some of which still have online vestiges and some of which were entirely online in the first place.
The Winchester Coin Cabinet, Special Collections, Brotherton Library, University of Leeds, 20th September 2017 to date, with accompanying virtual exhibition, last modified 13th October 2017 as of 8th August 2018 (two texts; other texts and design by Emma Herbert-Davies, web design and photography by Brotherton Library)
Inheriting Rome: the imperial legacy in coinage and culture, Coin Gallery, The Barber Institute of Fine Arts, 26th February 2015 to 24 April 2016 (extended from 25th January 2016); details at http://barber.org.uk/inheriting-rome/, last modified 8th September 2015 as of 6th October 2015 (concept, curation and texts by me, design and imagery by Blind Mice Design)
Tokens of Revolution: the propaganda coins of Thomas Spence and his contemporaries, virtual exhibition online at the Fitzwilliam Museum, Cambridge, since 24 September 2010 (design, all text, imaging and code except where otherwise credited; website framework by Shaun Osborne).
Antonio Rodriquez and the New Zealand Cross, virtual exhibition online at the Fitzwilliam Museum, Cambridge, since 19 August 2010 (design, all text, imaging and code except where otherwise credited; website framework by Shaun Osborne).
Anglo-Saxon Art in the Round. An Exhibition of Anglo-Saxon Coins and Artefacts to Celebrate the Acquisition by The Fitzwilliam Museum of the De Wit Collection of Early Anglo-Saxon Pennies, Octagon Gallery, Fitzwilliam Museum, Cambridge, 23 May to 7 September 2008, some imaging, prints and some installation, also accompanying virtual exhibition online at http://www.fitzmuseum.cam.ac.uk/gallery/anglosaxon/, last modified 21 April 2009 as of 17 June 2009 (design, some imaging and code; texts by Mark Blackburn, website framework by Shaun Osborne).
"Coin of the Moment: Harry Meader's Sea Gallantry Medal", virtual exhibition page online at the Fitzwilliam Museum, Cambridge, 28 March 2008 to 12 March 2016 (research, design, text, imaging and code; website framework by Shaun Osborne).
"Coin of the Moment: the gold penny of King Henry III, 1257-58", virtual exhibition page online at the Fitzwilliam Museum, Cambridge, 19 July 2007 to 10 April 2016 (imaging and code; text by Martin Allen, website framework by Shaun Osborne).
The Imagery of War, Octagon Gallery, Fitzwilliam Museum, Cambridge, 9 May to 27 August 2006; imaging, poster design and prints, accompanying virtual exhibition (design, imaging and code; texts by Mark Blackburn and Martin Allen, website framework by Shaun Osborne).
For further details of works in progress, for several of which I have texts available, see the Projects page.
Conference and Seminar presentations
"Like Saplings round a Dead Tree: Ends of Kingdoms and Empires in the 10th Century CE", guest lecture, Sun Yat-Sen University, Zhuhai, 17 December 2020
"Crisis and Migrations across the Mediterranean frontier: a Dark Age after all?", with Rebecca Darley, Nikolas Bakirtzis and Luca Zavagno, Global Byzantium at Ankara Past to Present, Bilkent University, 17th July 2020
"'He will ruin many from among the people': market exchange in the Byzantine Empire and the reform of Emperor Anastasius I", Coins and Empire: International Conference on the Interaction of Trade and Empire in the Numismatic Perspective, National Museum of China, Beijing, 13 November 2019
"Ends of Empire: Two Island Frontiers between Byzantium and Islam", International Medieval Congress, University of Leeds, 2 July 2019
"Nuns, Signatures and Literacy in 10th-Carolingian Catalonia", Women in the Medieval World: Comparative Perspectives, Birkbeck, University of London, 17th June 2019
"Counts Where It Counts: Spheres of Comital Action in the Tenth-Century West Frankish Periphery", Keynote Lecture at Non-Royal Rulership in the Earlier Medieval West, c. 600-1200, University of Leeds, 9th April 2019
"Why Make an Inventory (in 10th-Century Catalonia)?", International Medieval Congress, University of Leeds, 4 July 2018
"Local Élites and Frontier Lordship, in Medieval Iberia and Beyond", Keynote Address at Boundaries and Frontiers in the Middle Ages, Midlands 3 Cities Consortium Postgraduate Conference, University of Nottingham, 4th May 2018
"Our Man on the March: Three Frontier Lords and their Geographical Positions", Rethinking the Medieval Frontier 1, University of Leeds, 10th April 2018
"Nests of Pirates: the Balearic Islands and la-Garde-Freinet compared", Islands at the Frontiers of Empires in the Middle Ages, Bilkent University, Ankara, 23rd February 2018
"Hagrites, Hagarenes, Chaldeans, and Saracens: Missing Muslims on the Spanish March, 800-1000", International Medieval Congress, University of Leeds, 6th July 2017
"Separated by the Past: Western coinage from pseudo-imperial to quasi-independent, 5th to 7th centuries", Byzantine Gold Coins in Late Antiquity, North-East Normal University, Changchun, 23rd June 2017
"Who's In Charge Here? Border Lords and Central Control in North-Eastern Iberia around the Year 1000", 52nd International Congress on Medieval Studies, West Michigan University, Kalamazoo, 11th May 2017
"'All that Glitters... ': Testing the Purity of Byzantine Gold Coinage", 50th Spring Symposium of the Society for the Promotion of Byzantine Studies, University of Birmingham, 27th March 2017 (emergency replacement speaker with 20 minutes warning!)
"Judging the Judges in the Frankish March of Spain before the Year 1000", Medieval and Ancient Research Seminar, University of Sheffield, 7th December 2016
"Heartland and Frontier from the Perspective of the Banū Qasī, 842-907", International Medieval Congress, University of Leeds, in session 'Rethinking the Medieval Frontier, I: Control and Autonomy in the Iberian Peninsula, 5th-10th Centuries', 7th July 2016
"The Marriage of History and Science: Testing the Purity of Byzantine Gold Coinage", Guest Lecture, Barber Institute of Fine Arts, Birmingham, 18th May 2016
"The Marriage of Numismatics and X-Rays: difficulties with the x-ray-fluorescence-based study of the early medieval Mediterranean economy", Framing the Late Antique and Early Medieval Economy Project Conference 2016, Princeton University, 29th April 2016
"A Problem Of Concavity: The Original Purpose Of The So-Called 'Scyphate' Byzantine Coinage", International Numismatic Congress 2015, Taormina, 21st September 2015
"Small Change and Big Changes: minting and money after the Fall of Rome", Guest Lecture, Barber Institute of Fine Arts, Birmingham, 16th September 2015
"Ceremonies of Property Transfer in Carolingian Catalonia: a model of documented transaction", Second Conference of the Society for the Medieval Mediterranean, University of Lincoln, 14th July 2015
"De Administrandis Marcis: The 10th-Century Frontier with Islam seen from Barcelona and Byzantium", International Medieval Congress, University of Leeds, in session 'Rethinking the Medieval Frontier, I: Beyond the Reconquista', 9th July 2015
"In the Teeth of Reform: reprofiling the Catalan episcopate around the year 1000", International Congress on Medieval Studies, West Michigan University, 14th May 2015
"The Anger of St Peter: the effects of Spiritual Sanctions in early medieval Charters of Donation", Doubting Christianity: The Church and Doubt, 53rd Summer Meeting of the Ecclesiastical History Society, University of Sheffield, 23rd July 2014
"Counting Clergy: The Distribution of Priestly Presence around a 10th-Century Catalan Town", International Medieval Congress, University of Leeds, 10 July 2014
"'Completely detached from the kingdom of the Franks'? Political identity in Catalonia in the very late Carolingian era", The Carolingian Frontier and its Neighbours, University of Cambridge, 4th July 2014
"'Miles' or militia: army-service and castle-guard in tenth-century Catalonia", Centre for the Study of the Middle Ages Seminar, University of Birmingham, 20th January 2014
"The Priests of Montpeità: Competing Ecclesiastical Interests at the 10th-Century Catalan Frontier", International Medieval Congress, University of Leeds, 4th July 2013
"Two men and a monastery: clerical involvements in Manresa before 1000", Medieval Economic and Social History Seminar, University of Oxford, 5th June 2013
"On stone and skin: inscription of a community at a Catalan monastery around the year 1000", a special seminar jointly hosted by the Monash Centre for Medieval & Renaissance Studies and The University of Melbourne, 3rd April 2013
"Brokedown palaces or Torres dels Moros? Finding the fisc in late-Carolingian Catalonia", Winchester Seminar on Comparative Medeival Culture, 14th March 2013
"Poor tools to think with: the human space in digital diplomatics", Digital Diplomatics 2011: tools for the digital diplomatist, Università degli Studi di Napoli Federico II and Società Napoletana di Storia Patria, Naples, 1st October 2011
"Taking it to the March: Carolingian justice in 9th-century Girona", International Medieval Congress, University of Leeds, in session 'Problems and Possibilities of Early Medieval Diplomatic, I: Royal Charters and Royal Representatives', 14 July 2011
"Managing power in the post-Carolingian era: rulers and ruled in frontier Catalonia, 880-1010", Earlier Middle Ages Seminar, Institute of Historical Research, London, 15 June 2011
"2:1 against: cereal yields in Carolingian Europe and the Brevium Exempla", 46th International Congress on Medieval Studies, University of West Michigan, Kalamazoo, 15 May 2011
"A Likely Story: narratives in charter material from early medieval Catalonia", Medieval History Seminar, University of Oxford, 18 October 2010
"Dilettante or Politician: Count-Bishop Miró of Girona (970-984) and his intellectual cosmos", The Clerical Cosmos: ecclesiastical power, culture, and society, c. 900 to c. 1075, Faculty of History, University of Oxford, 4 September 2010
"An Englishman's blog is his castle: names, freedom and control in medievalist blogging", 17th Biennial Congress of the New Chaucer Society, Università per Stranieri, Siena, 18 July 2010, text online here as PDF
"Caliph, King, or Grandfather: Strategies of Legitimization on the Spanish March in the Reign of Lothar III", International Medieval Congress, University of Leeds (in session 'Problems and Possibilities of Early Medieval Diplomatic'), 12 July 2010
"The Carolingian Succession to the Visigothic Fisc on the Spanish March", 45th International Congress of Medieval Studies, University of West Michigan, Kalamazoo, 16 May 2010
"What's in an ethnonym? Arabic-named Christians on the Frontier of Tenth-Century Spain", Clare College Research Symposium 2010, Clare College, Cambridge, 11 March 2010
"Nuns, Signatures and Literacy in late-Carolingian Catalonia", Excellentissima et merito famosissima historica, conference for Professor Rosamond McKitterick, Trinity College, Cambridge, 12 September 2009
"How to Take Over an Archive: Sant Pere de Casserres and its Old and New Monks", International Medieval Congress, University of Leeds (in submitted session 'Problems and Possibilities of Early Medieval Diplomatic, I: Pushing the Boundaries'), 14 July 2009
"Legends in their own Lifetime? The late Carolingians and Catalonia", Haskins Society Conference, Georgetown University (in session 'The Legend of Charlemagne and the Negotiation of Power'), 11 November 2008.
"The view from a coin room: the COINS project and numismatic study", EVA Vienna Conference 2008 "Digital Cultural Heritage: Essential for Tourism", Österreichische Akademie der Wissenschaften, Vienna (in session 'Coin Recognition Workshop'), 27 August 2008.
"Documents that shouldn't survive: preservation from before the archive in Catalonia and elsewhere". International Medieval Congress, University of Leeds (in submitted session 'Problems and Possibilities of Early Medieval Diplomatic, II: was it filed or was it lost?'), 7 July 2008.
"Centurions, Alcalas and Christiani Perversi: organisation of society in the pre-Catalan terra de ningú". Second Colloquium on the Cultures of Christian and Islamic Iberia, University of Exeter, 3 September 2007.
"Uncertain Origins: comparing the earliest documentary culture in Carolingian Catalonia". International Medieval Congress, University of Leeds (in submitted session 'Problems and Possibilities of Early Medieval Diplomatic, I: Formulas and Realities – Did Charters Reflect Real Life?'), 9 July 2007.
"Currency change in pre-millennial Catalonia: coinage, counts and economics". Department of Coins & Medals, Fitzwilliam Museum, Cambridge, 4 May 2007.
"Neo-Goths, Mozarabs and Kings: chronicles versus charters in tenth-century León". Earlier Middle Ages Seminar, Institute of Historical Research, London, 7 February 2007.
"An ivory tower over the palace? Gothic self-image in tenth-century León". Fifth Conference of Historians of Medieval Iberia, St Andrews, 7 September 2006.
"Fixing documents in Carolingian-period Catalonia". International Medieval Congress, Leeds (in submitted session: 'Clods, altars, records and donors: reading narratives and emotions in early medieval charters'), 11 July 2006.
"Aprisio in Catalonia in perspective", Fourth Conference of Historians of Medieval Iberia, Exeter, 15 September 2005.
"Sales, swindles and sanctions: Bishop Sal·la of Urgell and the counts of Catalonia". International Medieval Congress, Leeds (in session: 'Telling Laymen What to Do'), 21 July 2005.
"The Continuation of Carolingian Expansion: splitting hairs in medieval Catalonia". Second Conference of Historians of Medieval Spain and Portugal, Liverpool, 15 September 2003.
"Archbishop Ató of Vic: ecclesiastical separatism in Carolingian Catalonia". EMERGE Conference 2003, St Andrews, 13 September 2003.
"Power over Past and Future: Abbess Emma and the abbey of Sant Joan de les Abadesses". Earlier Middle Ages Seminar, Institute of Historical Research, London, 28 May 2003.
"The Political Range of Áedán mac Gabráin, King of Dál Riata". EMERGE Conference 2000, Edinburgh, 7 September 2000.