Publications include ‘Some Ciceronian models for Einhard’s life of Charlemagne’, in Viator 26 (1995); The Common Good in Late Medieval Political Thought (1999); (as co-editor) Ethics and Political Philosophy (2001); ‘No bishop, no king: The ministerial ideology of kingship and Asser’s Res gestae Aelfredi’ in R. Gameson and H. Leyser (eds), Belief and Culture in the Middle Ages (2001);  ‘De republica I.39 in medieval and renaissance political thought’, in J. North and J. Powell (eds), Cicero on the Republic (2001); ‘Accidental perfection - ecclesiology and political thought in Dante’s Monarchia’ in J. Barnes (ed.), Dante and the Church (2006); ‘The virtue of rhetoric – Alcuin’s Disputatio de Rhetorica et de Virtutibus’ in M. Garrison (ed.), Alcuin (2007); ‘The utility of peace in Dante’, in J. Barnes (ed.), War and Peace in Dante (2010); and Rhetoric & the Writing of History 400-1500 (2011).

Research interests include medieval rhetoric, medieval political philosophy, scholasticism & humanism, and art history.