Assuming for the moment he enlisted pretty early on which his age might indicate & in an Irish Regt. I found 2, 1 in the RDF who died WW1 & the other in the 6th. RIR no. 6/7458, enlisted 19/9/14, discharged due to wounds 7/1918.
He received the 15 Star, BW & V Medals.
Does any of this sound familiar ?