Uther Pendragon was the father of King Arthur, and the brother of Ambrosius, whom he succeeded as King of Britain. His name, Pendragon, means the "Chief-Dragon", which means he is the "foremost leader" or "chief of warriors".
So the story goes, Uther saw a comet-shaped like a dragon in the night sky on the night of his brother’s death – hence the name he gave to himself upon taking the throne. According to the French poet Robert de Boron, Uther founded the Order of the Round Table. Contrary to popular belief, King Uther Pendragon was not created from the imagination of Geoffrey of Monmouth like so many Arthurian legends. In fact, he appears in earlier Welsh tradition, both in his own right and as King Arthur’s father.