Uther Pendragon (French: Uter Pendragon; Welsh: Wthyr Bendragon, Uthr Bendragon, Uthyr Pendraeg) is a legendary king of sub-Roman Britain and the father of King Arthur.
According to Geoffrey of Monmouth in the Historia, the name means "dragon’s head" . Utther would have killed a red dragon and earns both his name and colors (still Wales symbol). .
According to Geoffrey and works based on his version, Uther acquired the epithet when he witnessed a portentous dragon-shaped comet, which inspired him to use dragons on his standards. According to the Grail cycle, it was Uther’s older brother (elsewhere called Ambrosius Aurelianus) who saw the comet and received the name "Pendragon", Uther taking his epithet after his death.
The saxons invaders had a white dragon on their flag. Another mythical reference is Vlad Drakul (Son of the Dragon, or Devil), the father of Dracula.