1999: A Novel of the Celtic Tiger and the Search for Peace (Irish Century Book 5)

1972: A Novel of Ireland's Unfinished Revolution: A Novel of Ireland's Revolution (Irish Century Book 4)

1949: A Novel of the Irish Free State (Irish Century Book 3)

1921: The Great Novel of the Irish Civil War (Irish Century Book 2)

1916: A Novel of the Irish Rebellion (Irish Century Book 1)

Lion of Ireland (Celtic World of Morgan Llywelyn Book 5)

Finn Mac Cool (Celtic World of Morgan Llywelyn Book 3)

Only the Stones Survive: A Novel

Grania: She-King of the Irish Seas

A Vengeful Wind: A Novel of Viking Age Ireland (The Norsemen Saga Book 8)

Pride of Lions (Celtic World of Morgan Llywelyn Book 6)