No I know nothing about them before they left Ireland apart from the marriage cert. I will try and find out the names of their children if that helps.
Are these your ancestors?
If so have you followed the usual and easiest way to track back ancestors and that is by doing a step by step process back from you, to parents, grandparents etc. Doing it this way does help to throw up naming patterns etc. Going laterally to find siblings of parents, grandparents etc also is useful as siblings may also follow naming patterns.