In 2004, she took up a John O'Donovan scholarship in Celtic Studies from the Dublin Institute for Advanced Studies,[4] before taking a lectureship in the Celtic department at the University of Aberdeen and then in Irish Studies at the University of Liverpool.[2] Subsequently, at Liverpool, she became Professor of Medieval History with the Institute of Irish Studies.[1]
Select publications
"The Chronology of the Last Scandinavian Kings of York, AD 937–954", Northern History 40 (2003), pp. 25–51
"Eric Bloodaxe – axed? The Mystery of the Last Viking King of York" Mediaeval Scandinavia 14 (2004), pp. 51–77
Viking kings of Britain and Ireland : the Dynasty of Ivarr to AD 1014 (Edinburgh : Dunedin Academic, 2007)
"'Hiberno-Norwegians' and 'Anglo-Danes': Anachronistic Ethnicities in Viking Age England", Mediaeval Scandinavia 19 *2009), pp. 139-69
No horns on their helmets? essays on the insular Viking-age (Centre for Anglo-Saxon Studies and the Centre for Celtic Studies, University of Aberdeen: Aberdeen, 2013)
(ed.) Jocelin of Furness : proceedings of the 2011 Conference (Donington: Shaun Tyas, 2013)
Medieval Ireland (Cambridge : Cambridge University Press, 2018)