Sean Duffy

Ireland in the Middle Ages

1997

Routledge Revivals : Medieval Ireland

2017

Atlas of Irish history

1997

The individual in the Community

2006

Medieval Ireland

2005

Medieval Dublin XVIII

2021

Medieval Dublin XIX

2023

International Brand Strategy

2021

Brian Boru and the Battle of Clontarf

2014

The Geraldines and Medieval Ireland

2020

New History of the Isle of Man Volume 3

2007

Medieval Dublin XX

2024

Medieval Dublin XV

2016

Medieval Dublin XVI : Proceedings of Clontarf 1014-2014

2017

Medieval Dublin XIV

2015

Medieval Dublin VI

2005

Medieval Dublin VIII

2008

Discovery of Lollipop Island

2023