Possibly the swiftest route to your roots.
Irish genealogy website directory.
www.rootsweb.ancestry.com/~irlker/marreg.html
Description:
In 1863 Poor Law Unions became known as Superintendent Registrar's Districts in order to record births, marriages, and deaths and the Dispensary Districts became known as Registrar's Districts. The PLUs of Kerry were: Cahersiveen, Dingle, Glin, Kenmare, Killarney, Listowel, Tralee. These can be viewed in a map of PLUs. Read more about Superindendent's Registration Districts.