By the far the best book to come out in recent years on Ireland in the Revolutionary period is without a doubt:

Remembering the Year of the French: Irish Folk History and Social Memory
Guy Beiner
2006, 488 pp, 36 b/w illus., 9 tables and charts, 2 maps
ISBN 978-0-299-21824-9

I found it to be a terrific read!
I also hear it won numerous international prizes and has been gathering a long string of rave reviews in academic journals and magazines.
The website also states that a new paperback edition should be out this coming year.
http://www.wisc.edu/wisconsinpress/books/3846.htm