Dragon only the symbol of Wales since 1959

[TonyGosling]

When discussing flags of Wales, one must start with the most recognisable and famous banner the country possesses, “Y Ddraig Coch”.

To many people, including the average Welshman, this is the only flag the nation has and many will be surprised to learn just how recent official recognition of a seemingly ageless flag was. Accepted as an official flag by the British Government only in 1959, the flag consists of a passant Red Dragon on a Green and White background, often considered a field. Although only just over 60years old, the flag and its significance has been felt by the Welsh people for centuries.
https://nathenamin.com/2011/11/08/history-of-welsh-flags/