Matthew, E. (2009) Henry V and the proposal for an Irish crusade. In: Smith, B. (ed.) Ireland and the English world in the Late Middle Ages: essays in honour of Robin Frame. Palgrave Macmillan, Basingstoke & New York, pp. 161-175. ISBN 9780230542891

Matthew, E. (2004) Butler, James, fourth earl of Ormond (1390–1452). In: Oxford Dictionary of National Biography. Oxford University Press, UK, pp. 147-149. doi: https://doi.org/10.1093/ref:odnb/4187

Matthew, E. (2004) Nugent, Richard, first Baron Delvin and baron of Delvin (d. 1475). In: Oxford Dictionary of National Biography. Oxford University Press, UK, pp. 262-263. doi: https://doi.org/10.1093/ref:odnb/20394

Matthew, E. (2004) Talbot, Richard (d. 1449), archbishop of Dublin. In: Oxford Dictionary of National Biography. Oxford University Press, UK, pp. 716-717. doi: https://doi.org/10.1093/ref:odnb/26939