found just two RC Parish Priests named Hourigan or similar :
1879 - Thomas Hourican, Fenagh, Ardagh and Clonmac. (Co. Carlow)
1839 - Nicholas Hourigan, Shinrone & Kilcommon, Killaloe
(name, post town/parish, diocese,)
Diocese of Killaloe covers parts of Tipperary, Offaly (old name King's county) and Clare, and as far as I can see the parish of Shinrone covers a part of southern Co. Offaly plus a section in west Co. Tipperary. I checked the same parish in 1848, but there's no sign of Nicholas at that stage.
I've checked various listings from 1839 to 1879. Maybe the dates are slightly too late for James, or he was a curate rather than a parish priest, or worked with a religious order, convent, orphanage etc
Shane
...Rev. Nicholas Hourigan's brother, Rev. James Francis Hourigan, son of Thomas Hourigan, was "born January 11, 1815 in Nenagh, County Tipperary" and ordained before he left Ireland in 1841.
....
p.s. no wonder I couldn't find James....