Sorry to say do not think this is my man as have a Death Cert for James which states birth date 13 September 1912 also have marriage cert which says father James O'Toole as a farmer in 1940 not sure if in Ireland or England
Well, your problem is that there is no birth registered for a James O'Toole with that date anywhere in Ireland. So:
- Could be the birth was unregistered. Not at all uncommon
- Could be that the birth date is incorrect. Lots of laboring class did not actually know.
Was the 1940 marriage a Catholic church one? If so, I would say your best course of action is to look up the church register entry for the marriage. It may well record both parents names. Once you have those, you can then locate their marriage in Ireland.