Historicity of King Arthur in the mid-10th century and gives the date of Badon as 516, and it lists Arthur's death as occurring in 537 at the Battle of Camlann. The annals survive in a version dating from the 10th century, and all other sources that name Arthur were written at least 400 years after the events which they describe. Arthur was first styled as a king of the Britons in Geoffrey of Monmouth's chronicle "Historia Regum Britanniae" (c. 1136). Geoffrey also makes Ambrosius Aurelianus (whom he calls Aurelius Ambrosius) a king of Britain and an older brother of Uther Pendragon, father of Arthur,
King Arthur democracy. In John Cowper Powys's "" (1951), set in Wales in 499, just prior to the Saxon invasion, Arthur, the Emperor of Britain, is only a minor character, whereas Myrddin (Merlin) and Nineue, Tennyson's Vivien, are major figures. Myrddin's disappearance at the end of the novel is "in the tradition of magical hibernation when the king or mage leaves his people for some island or cave to return either at a more propitious or more dangerous time" (see King Arthur's messianic return). Also Powys's earlier novel, "A Glastonbury Romance" (1932) is concerned with both the Holy Grail and the legend