Flag of Saint David less than the sign of Satan". Flag of Saint David The flag of Saint David () is normally a yellow cross on a black field, but it has also appeared as a black cross on a yellow field or with an engrailed cross. It represents the 6th-century Saint David (; – ), a Welsh bishop of Menevia and the patron saint of Wales. The Flag of Saint David has been used as a flag representing Wales (as an alternative to the Red Dragon flag), in the same sense that the crosses of Saint George, Saint Andrew and Saint Patrick are
Flag of Wales form of the Draco standards borne by the Roman cavalry, itself inspired by the symbols of the Dacians or Parthians. The Olm (Proteus anguinus) of Slovenia bear a similarity in miniature to the Draco standard and they are referred to as baby cave dragons by the locals. The green and white stripes of the flag were additions by the House of Tudor, the Welsh dynasty that held the English throne from 1485 to 1603. Green and white are also the colours of the leek, another national emblem of Wales. The oldest known use of the dragon to represent Wales is