Hi Jim
I found the baptism record of James on www.rootsireland.ie/ but couldn't find the parents' marriage anywhere even though I tried searching for Bridget as well as Mary.
One tree on ancestry has Michael as Thomas which I also tried.
If you haven't already done so you might want to look at the Tithe Applotments (free online a) which have 2 Michaels in Mayo 1824.
I can't let into Griffiths Valuation (free online) at the moment.at the moment
Col