I am reserching a John Hourigan who married Margaret Hayes in 1850 in Lattin, South Tipperary They had 14 children, one of whom was John Hourigan born/baptised on 4/8/1851. Four of the children came to Australia in the late 1870s - John wasn't one of them. I've been able to trace the 4 who came here but I have only started research in Ireland for the rest of the family.
Good luck
John Hourigan