Cronin is not in my direct line, but of the wife of my 2nd great grand uncle. The Hollands in my family consist of Michael Holland who married Elizabeth Kingston & their children were Mary, Michael, Johanna, Edmund, Thomas, Ellen, Anna, Catherine, Elizabeth & Nance. The children were born in Schull West Parish, County Cork, which is now Goleen Parish, very south western part of Ireland. Michael & Elizabeth were born in Schull East Parish. I think all the siblings came to the US in the 1840's through Canada. I could not find a Daniel Holland in my tree... I found a marriage certificate of an Daniel Holland & Mary Croneen in Bantry Parish, on 06 Mar 1832. If you go to http://churchrecords.irishgenealogy.ie/churchrecords/
you may find some more information.