Hugh Heily

Hello I've just become a member. Im researching Greatx3 grandfather who came from Cork Ireland. I don't know which part of Cork but I'm guessing the city. He was born 1852/53 to parents John Healy and Mary Martin. He had a brother Patrick. He settled in Bigstone Graceville Minnasota on The Catholic Colonization Scheme of Bishop John Ireland of the 1870s/1880s. I'm trying to trace the Cork origins of the family. Been searching for record of B/M/D of John and Mary or the birth record of Hugh but without sucess. Can anyone tell me where they think the best place to get results would be here in Ireland. Thank you for your help. Liz