I'm trying to get some more information on the history of this car but am struggling. Basically it was originally purchased in 1967 by Irish Shipping Ltd, which was apparently they're first year of profit in 10 years! In 1973 it was then bought by Iona Garage & Engineering Works LTD, assuming Pierce Cahill. It still has the Irish Aero Club sticker in the rear window from this time. Its back on the road now after a long break.
Unfortunately neither Irish Shipping, the Irish Aero Club or Iona Engineering exist anymore. Anyway, I thought it was worth asking on the off chance someone can point me in the right direction or put me in contact with someone of relevance. I had the pleasure of talking to two former Iona Engineering workers at Dalkey, although I don't remember if they recognised the car.
I've attached a photo below