I love this book!!! and I knew who Brian Boru was before it. Partly because there is a large pub by that name that I frequent and part because I love Celtic history.
As for a character that resembles me....I have no idea. I think I'm much more a composite. Though the character that comes to mind first is Roger. I'm an historian too soon to be teacher (hopefully) love digging into things, and a musician, fiddler.
There's also a bit of Joe from Little Women in there.