Francis Scott/ Catherine Bulger, County Wexford

Looking for birth record of Francis Scott my gggrandfather. Born 3 Feb 1820, unknown town/county (Date from death cert., 31 Mar 1889, Buffalo NY USA. Married to Margret Bolger (Bulger) on 9 Feb 1850in Enniscorthy Parish, Ferns Diocese, County Wexford.

Checked for Francis' birthin Ferns Parish, Enniscorthy Parish and Wexford Parish. Nothing found.

Found Margret's birth to Edward Bulger and Catherine Hawkins, as well as siblings, in Ferns parish, Ferns Diocese, County Wexford (Mary 1822, John 1825, Margret 1828, Anne 1832, and Peter 1835. I also have the birth of Catherine Bulger about 1820, not in these records but from those in the US. She married John Roche in Nov 1854 in Ferns Parish, Ferns Diocese. County Wexford. She is found in several censuses living in Buffalo right next door to Francis Scott and her sister Margret.

I searched for Edward/Catherine'smarriage in Ferns and Enniscorthy's records from 1815 to 1823. No luck.

Any ideas on where to go from here?