Well, on a recent "clockwise" 2 week tour of Ireland, North and South, I had almost given up hope.
Until on the way to the cliffs of Moher (well worth visiting anyway) I spotted a sign for the John P Holland Centre.
Those initials could only mean one thing - the Irish originator of the modern submarine. There was a very smart little museum commemorating the great man himself. (There is also one in New Jersey, I understand.)
Pride of place is a statue of the iconic photo of John Holland
The very friendly curator/owner.
They are on Facebook: