Possibly the swiftest route to your roots.
Irish genealogy website directory.
globalgenealogy.com/globalgazette/gazkb/gazkb68.htm
Description:
Many of our Irish ancestors were tenant farmers who leased or rented their land directly from a landowner or indirectly from a "middleman." Only a small percentage of people in Ireland owned their land outright (this was called holding your land "in fee.").