Richard I believe your Allens are a different strain. It sounds like, by the Cristian names that your Allens came from a Protestant background. Mine I believe are from a Catholic background.The records I have obtained so far are only back as far as early 1800s. Under British rule, the ordinary Irish people wouldn't have had many rights. My ancestors worked for Gentry and were horse doctors, blacksmiths and stable hands. One, a John Allen was the registered trainer for the 1907 Irish Derby, having travelled from the U.S. with the ''Boss Croker''. So if I can help anyhow, please get in touch.