Hello pernes,
I'm sorry you did not receive a reply to your message dated 24th August last year in view of the fact that it was a special trip to Ireland for your father's 70th Birthday. I hope you were not too disappointed by the fact that you did not receive a reply.
I would be interested to know what progress you made when you arrived in Ireland. Were you able to find the undertakers in Flood Street, Galway? Did they have sufficient details enabling you to learn more about the place where your father's grandparents were buried? Was there a headstone already in place or did your father have to make arrangements to erect one?
If you had no success when you were in Galway last October does your father intend to proceed with his plans and would you like further assistance from the members of Rootschat in your search.
There were a couple of men named John D'Arcy in Galway at the time of Griffiths Valuation in the county in 1855.
At this stage it would be difficult to say which, if either, might be the John you are seeking.
http://www.failteromhat.com/griffiths.phpThe name John D'Arcy may be found in the following locations:-
Magheramore townland in the parish of Kilcummin (Note townland then parish)
Ballymore Upper in Clonfert
Best Wishes, Christopher