Gwrtheyrn

From Old Welsh Guorthigirn meaning "supreme king", from guor meaning "over" and tigirn meaning "king, monarch". It is possible that this is not a name, but a title. According to medieval chroniclers, Gwrtheyrn (also known as Vortigern) was a 5th-century king of the Britons. It was he who invited the brothers Hengist and Horsa to Britain, which eventually led to the Anglo-Saxon conquest of England.