Possibly the swiftest route to your roots.
Irish genealogy website directory.
www.from-ireland.net/trade-directory/Louth
Description:
In Ireland, many of the towns had a square, and around the square were houses (homes) with one or two shops or businesses. The streets of the town all went from that square. Most towns had a 'main street' - some called it a High street, and it was usually on that main street that the majority of shops and businesses were located.