Alternatively, have you read anything by the author that may suggest the above book will be of high or low quality? Upon a little research, I found the author is a lecturer on Irish heritage and mythology at Universirty of Limerick. I had a look at a sumnmary of one of his lectures and nothing beat me over the head with alarm but as a third party intepretation of the lecture, it's a little ard to ascertain the true quality of his work.
I suppose this is just a long winded way of asking your opinion on the book/author and if you coud sugest some reliable sources of information on Brighid.
x-posted to cr_r