- The Oxford History of Ireland
- The Oxford History of the British Empire: Volume I: The Origins of Empire: British Overseas Enterprise to the Close of the Seventeenth Century (Oxford History of the British Empire)
- Making Ireland British, 1580 - 1650
- The Upstart Earl: A Study of the Social and Mental World of Richard Boyle, First Earl of Cork, 1566-1643
- Imagining Ireland's Pasts: Early Modern Ireland Through the Centuries