Possibly the swiftest route to your roots.
Irish genealogy website directory.
www.irishtimes.com/ancestor/browse/records/church/quaker/index.htm
Description:
From the time of their first arrival in Ireland in the seventeenth century, The Society of Friends, or Quakers, kept rational and systematic records of the births, marriages and deaths of all of their members, and in most cases these continue without a break up to the present.