Thats fantastic, many thanks wivenhoe and rosball. Are Service Records available anywhere i wonder? He was born in 1898 but wold not be surprising that he would have given a false one as he had fled from Ireland as a wanted man. His father was Michael but his brother, also a rebel, was Patrick hence why he may have given Patrick as fathers name. I will do a search for other James Riordans born in Ireland from 1898-1903 and see what i find also just in case.
I have the death cert.