Harford

Am searching for possible parish of my gg grandfather's birth. On English censuses he was born in Galway around 1821. His name was John Harford, his father was Kieran, a tinman. In England around 1835 another child was born to Kieran (his wife unknown, possibly Bridget as this name recurs with offspring). This family travelled around a lot once in England, so possibly they didn't remain in Galway. It is possible other children were born in Ireland in the interim time but this is pure supposition at present. All attempts to trace my family roots in Ireland have so far been fruitless. This brick wall is driving me crazy!