There are 1 book by Mary T. Keane O'Callaghan on BookOrb. A strong starting point is Kings, princes and chieftains from the beginning (2019). The bibliography below is in publication order, with series grouped in reading order.
Standalone books
Frequently asked questions
How many books has Mary T. Keane O'Callaghan written?
BookOrb lists 1 book by Mary T. Keane O'Callaghan.
Where should I start with Mary T. Keane O'Callaghan?
A good starting point is Kings, princes and chieftains from the beginning (2019).
What is the Mary T. Keane O'Callaghan books in order list?
In publication order: 1. Kings, princes and chieftains from the beginning (2019).