Johanna Sullivan born about 1853

I have located a record on Eugene Sullivan born (or baptized) on 18 April 1856 - parents Timothy and Katherine O'Reilly - could this be the brother of Johanna, same parents names, who I have been looking for records on? She is my 3x GG mother. Church is St. Finian's Dromod. Is there a record for Johanna in St. Finian's records? Diocese of Ardfert & Aghadoe. First time I have had a possible lead on where in Kerry Johanna might have been from! Can anyone help? Johanna married Thomas Sullivan, also from Kerry but not sure if that was before or after her immigration to USA. Mother Katherine came with her to US. Help would be so appreciated!