I have an "Anna" Morrisroe in our line.
b. 26 Sept 1874 to Mary and Patrick Morrisroe. Deoending on who you talk to she came from Roscommon or Mayo. I'm still confused on where as Ballaghderreen which is now in Roscommon was at that time in Mayo. My understanding that this city was in Mayo until the "Great Land Act of 1898"

Good luck in your search!