There are also a few Hourigans in Florida, USA. My husband is a Hourigan and our two sons will carry on the name as well. We've traced our Hourigans back through Canada and into Ireland to a Michael Hourigan, born 1816 in County Clare. (married Bridget Maloney)
We think that his father was Jeremiah Hourigan (b: 1750) of Limerick, Ireland but are not sure. I would be most appreciative if someone can help us make the connection and to understand the Hourigan ancestry in Ireland.