The Celtic dragon represents sovereignty, power or a chief, such as Pendragon, the Celtic word meaning 'chief'. The Red Dragon of Cadwallader or Cadwaller is the emblem of Wales – 'upon a mount vert, a dragon passant, wings expanded and endorsed gules – the Red Dragon Dreadful'. It was blazed on King Arthur's helmet in battle, later it was associated with Geoffrey of Monmouth and Owen Glendower. The Saxons had the white dragon as a royal standard. In early Britain it depicted supreme power.