The coat of arms of Henry VII with the Welsh Dragon supporting the royal arms of England
The dragon standard was raised in 1400 by Owen Glendower, as a symbol of revolt against the English Crown and was brought to England by the House of Tudor, the reigning Welsh dynasty from 1485 to 1603.
The green and white stripes of the flag were additions of Henry VII, the first Tudor king, representing the colours of his standard.
