Henry is from Maine USA, which came from New Brunswick Canada that came from the Shetland Islands Scotland.

Not Irish. Our last is Henry and has been for many generations. We are of the Clan McNaughton (Macnaghten) which at one time was a very large clan. I can assist you if your ancestry came from Scotland and especially the Shetland islands. The Clans and Nobles kept great records.

Below are listed place's of origin for surname HENRY..
Scotland
Ireland
England
Great Britain
France
Germany