A Scottish town and castle.

In Welsh legend, the prophet Lailoken (identified with Merlin) supposedly went mad at a battle fought between Lidel and Carwannock.

In Guillaume le Clercís Fergus, Arthurís knight Fergus met Lady Galiene of Lothian, his future wife, while lodging at Lidel.

There is an actual castle in Roxburghshire called Liddel.