McManus, Lily. The Professor in Erin
Divergence: 1601 CE
What if: Hugh O'Neill won the Battle of Kinsale in 1601, ending English rule in Ireland.
Summary: In the 1900s, an archaeologist awakens from an injury to find himself in an Ireland ruled by Niall III from a rebuilt Tara. Unfortunately, the Triple Alliance of Ireland, Spain and Italy is on the verge of war with Germany.
Published: M.H. Gill 1918.