I Am Looking for Info on Andrew and James Mcgough from Ireland

This Andrew and James MCGOUGH are my 3rd and 2nd greatgrandfathers.
Andrew born abt 1804 in Ireland
James born abt 1835 in Ireland
They came over on the ship Coronet depart from Dublin, Ireland and arrived in New York Nov 20, 1851.
I am trying to find more information about them in Ireland. I have been at this brick wall for awhile.