There are 1 book by Thomas Park O'Brien on BookOrb. A strong starting point is Brian Boru (2002). The bibliography below is in publication order, with series grouped in reading order.
Standalone books
Frequently asked questions
How many books has Thomas Park O'Brien written?
BookOrb lists 1 book by Thomas Park O'Brien.
Where should I start with Thomas Park O'Brien?
A good starting point is Brian Boru (2002).
What is the Thomas Park O'Brien books in order list?
In publication order: 1. Brian Boru (2002).