Thank you very much for your query. Have you checked the marriage records (available at the General Register Office (GRO))? You might also consider contacting the parish priest, if your search in the GRO records are unsuccessful. The parish priest might be able to give you the year they married (perhaps c.1868?), and then your search in the GRO will be more precise. I hope this is of some help.
In the meantime, keep checking the IRO website, as someone in the community might have information in time.