score:3
It could be because he pretty much laid low and took it easy during that time.
I'd suggest looking over local Irish newspapers and legal documents for the period in question. Much like a geneology researcher would do.
A paying account at ancestory.com might help with that. However, you do have to be careful with that site. They allow user content, but their moderation tools aren't nearly as effective as a SE site's. For example, my mom managed to trace our family ancestory on ancestory.com back to "Thor of Asguard". (I guess my physique must come from my father's side...)
Upvote:1
I knew someone (long dead) who lived near his wife's relatives in Dublin. It was always said he drank heavily, never worked and after dying in a bar it emerged he had no money. His children had to be taken out of school and (I think) the family lost everything. He was generally held to be a con man. The person I knew always disliked him but only realised his war history after his death when she read David Niven's autobiography "The moon's a balloon". Apparently he had always been very unpleasant and thought himself above the Irish. Ireland has had a Freedom of Information Act for years now, so O should think information should be available.