King Arthur is a legendary British leader who appears in medieval literature. Over time, his story has been re-worked to include the Sword in the Stone, the Knights of the Round Table, and the quest for the Holy Grail. While many people may consider Arthur to be a mythical hero, some historians say he did really exist. Two ancient texts, the Historia Brittonum (The History of the Britons) and Annales Cambriae (The Annals of Wales), depict Arthur as a Romano-British leader. He probably gained fame battling Saxon invaders in the early sixth century. There is even a record of Arthur killing 960 men single-handedly in one battle at Badon. However, there is no mention of Arthur being royalty. He was most likely a warrior. Other references to Arthur come from various Celtic kingdoms claming him as their king. There were many princes named Arthur in the sixth century, but historians say they were named in honour of the legendary hero. And the legend has been sustained over hundreds of years. The earliest accounts of an Arthurian figure can be traced back to the worship of a Celtic god. Later on, the Tudor dynasty claimed lineage to King Arthur as justification for their reign and their claims to both the Welsh and English thrones. The Tudors ruled England from 1485 to 1603. They had particular interest in defending Arthur as a genuine historical figure. Since then, artefacts and places have been called 'Arthurian'. The Arthur Stone, found in Tintagel Castle in Cornwall, and the Glastonbury Cross, are notable examples. Whether he was king, warrior or myth, Arthur caught the country's imagination. Arthur battled Saxons, monsters and witches, before his story was put together by Geoffrey of Monmouth in the 12th century. This is the version of the legend most would be familiar with: Arthur is the son of Uther Pendragon, and is accompanied by his adviser, Merlin. Although there is no conclusive evidence of Arthur's existence, his story has been changed and expanded since medieval times. Some say Arthur never died, and will return one day.