The title may refer to a type of coat with tails that was worn by early 19th century dancing master, so it may date from around that time. The first printed version is from the mid 19th century. This jig serves as a vehicle for Northumbrian sword dancing, and apparently also a fair amount of snobbery about whether it is too simple to be played in a session.
This tune was known earlier as New Shields, which may refer to the Tyneside towns of North Shields and South Shields in Northumberland. However, it may also originate from Scotland, where it was popular in the early 18th century.
This tune is named for the Cliffs of Moher, along the Atlantic coast northwest of Lahinch, in County Clare. The cliffs are about 8 kilometers long and reach 200 meters in height.