You can search for your ancestors online by visiting rootsireland.ie.
Please note that this service should not be regarded as a substitute for commissioning an experienced and trained Mayo-based researcher. As with all old records there are limitations and possible errors. Our researchers are familiar with the geography and history of North Mayo and what to expect when working with these documents.
From the Online Record Search you may find that, based on the information available to you, there are too many possibilities and in this situation we would recommend that you contact us for assistance.