Three Driscoll brothers RC priests

I have the name of one brother, Jeremiah Driscoll.  He was in Louisville, Kentucky, USA by  9 Feb 1841.   Family lore:  3 brothers from County Cork, all Catholic priests, emigrated to USA.  At some point, Jeremiah decided to leave the priesthood.  I'm not sure if this was before or after they emigrated.   The 1841 date is the date of his marriage in Louisville to an American, Martha Jane Townsend b 1828.  Yes, she was age 13.  The wedding was performed by a priest but not by a Driscoll priest.   Jeremiah died @ 1847 leaving a son behind, Shandy or Chaundy Holland Driscoll b 1842.  I have reached out to St Patrick's College Maynooth University thinking the men may have attended seminary there.   I am waiting on a reply as to whether the archivist can help locate them.  I mean, how often did three brothers go into the priesthood?  

Jeremiah is proving to be a brick wall which is frustrating, of course.  We are all so proud of our Driscoll heritage.   Jeremiah was my maternal grandmother's grandfather.  I have no clue as to the location of their home county, parish or township in County Cork.   Any assistance would be greatlly appreciated.   I must add that I just found the Ireland XO website and I am so appreciative of the philosophy behind this group.   Thanks to all the volunteers!  

Anne