Where did the Red Hand, the famous symbol of Ulster, originate?

It's the hand of Heremon, a chief so keen to be first to lay claim to the land that he cut his own hand off the threw it from a ship!Not all legends from Ulster are so gory, of course, and in this collection we meet The Great Brown Bull, The Horsemen of Aileach, Paiste, The Great Black Pig, Maeve MacQuillan, Fintán, Febor and Fia and, of course, Colmcille and the Book of Movilla. Evocatively illustrated by Conor Busuttil, this collection of myths from Ireland's northern province will enthrall readers young and old.