You probably don’t give much thought to Robin Hood but he has been a constant in popular culture since his legend originated with English folklore ballads in the 15th century. In the intervening years, he has been the subject of theatre, radio plays, books, TV shows (remember Clannad’s theme tune to the 1984 ITV series?) and a multitude of movies (featuring among others Errol Flynn, Patrick Bergin and Russell Crowe in the title role).