Rburke50:
I searched the free site www.iirshgenealogy.ie (Church Tab) and found two leads.
John Kelly baptized March 23 1836 in Rathmines father Martin Kelly and mother Maria Doyle
John Kelly baptized June 28 1839 at St. Nicholas RC parish father Martin Kelly and mother Mary Cullin
Are you aware of any siblings to your John Kelly?
Roger McDonnell