Here are some of the additional Irish research links that were mentioned at our Irish genealogy program this evening.
Ancestry,com (in-library use only)Irish Data Collections https://search.ancestry.com/Places/Europe/Ireland/Default.aspx
Matheson, Robert. Varieties and Synonymes of Surnames and Christian Names in Ireland
Google Books: https://bit.ly/2XILTlC
American Ancestors (in-library use only) List of the England Historic Genealogical Society databases.