Possibly the swiftest route to your roots.
Irish genealogy website directory.
www.from-ireland.net/county/article/Protestant-Parishoners-Diocese-Of-Meath%2C-1802/Meath
Description:
In 1802 Bishop Thomas Lewis O\'Beirne instructed his Registrar to obtain from his clergy accurate written lists of their parishoners, with particulars of the various families. Some replied within days, others took a year or two and a few simply wrote down the total numbers. - See more at: http://www.from-ireland.net/county/article/Protestant-Parishoners-Diocese-Of-Meath%2C-1802/Meath#display