mythical `lost` land supposed once to have connected Cornwall in the west of England with the Scilly Isles lying in the English Channel. The name ... Found on http://www.britannica.com/eb/a-z/l/88
the mythical region where Sir Tristram was born, located near Cornwall in SW England and supposed to have been submerged by the sea. Found on https://www.infoplease.com/dictionary/lyonnesse