In Cornish folklore, an allegiance of seven kings who, according to Cornish tradition, helped Arthur to defeat the invading Danes and the battle of Vellendrucher. Afterwards they were said to have given praise and worshipped at the Sennan Holy Well, and then held a banquet at a rock called the Table Man.
Merlin subsequently prophesied that the Danes would one day return, a greater number of kings would see this event, and that it would mark the end of the world.
See also
Cornwall | The Legend of King Arthur
Denmark | The Legend of King Arthur