There are 2 books by J. O'Bryan on BookOrb. A strong starting point is Master of Ordum (2011). The bibliography below is in publication order, with series grouped in reading order.
Standalone books
Frequently asked questions
How many books has J. O'Bryan written?
BookOrb lists 2 books by J. O'Bryan.
Where should I start with J. O'Bryan?
A good starting point is Master of Ordum (2011).
What is the J. O'Bryan books in order list?
In publication order: 1. Master of Ordum (2011), 2. Amo de Ordum (2011).