Richard McGuirk son Peter McGuirk 1865

[ourgang]

I have been many years trying to unravel the McGuirk family.
I have a completed post on the Wicklow thread about Peter McGuirk Derrylossery
https://www.rootschat.com/forum/index.php?topic=575867.msg4502665#msg4502665

In the Glendalough in the 1911 census topic I have discussed Peter and his father Richard McGuirk
https://www.rootschat.com/forum/index.php?topic=697289.msg7302500#msg7302500

Peter McGuirk 1831 to 1868 was a soldier in the 84th regiment of foot (details given to me by a rootschatter). He was in the 1851 census as being at the East India Co Depot Warley Barracks. I found his grave at Deansgrange Cemetery Dublin date of death 4 August 1868.

Now there is something that is intriguing me. On the Irish Genealogy site I found a birth of a boy Richard at Dún Laoghaire Hospital on 17 October 1865. Father listed as Peter (abroad) and mother Mary Farrell. I am assuming that this Peter is my Peter 1831-1868!!

I cannot find a death for this young Richard (1865) or for the wife Mary McGuirk nee Farrell. I also can't find a marriage for Peter McGuirk and said Mary Farrell.

Did young Richard live? Where else could I look?