Possibly the swiftest route to your roots.
Irish genealogy website directory.
www.butler-soc.org/
Description:
The Butler Society was founded in 1967 and has published The Journal of The Butler Society since 1968. A Butler Rally is held every three years in Kilkenny, Ireland. Members come from many countries including Ireland, UK, USA, Canada, Australia, New Zealand, France, Germany, Spain, Argentina and South Africa.