Royal coat of arms of the United Kingdom Wales is represented in the English coat of arms. However the argument is somewhat disengenuous as in 1535 the Welsh Dragon was already part of the Tudor Coat of Arms. Upon the accession of the Tudor monarchs, who were themselves of Welsh descent, a Welsh Dragon was used as a supporter on the Royal Arms. This was dropped by their successors, the Scottish House of Stuart, who replaced the Tudors' dragon supporter with the Scottish unicorn. In the 20th century, the arms of the principality of Wales were added as an inescutcheon to the coat of arms of the Prince
Tudors of Penmynydd of Snowdon and Constable of Beaumaris Castle, and his younger brothers Rhys ap Tudur and Gwilym ap Tudur, were among the personal retinue of Richard II of England. However, following that king's overthrow, Rhys, Gwilym and another brother, Maredudd ap Tudur, gave their allegiance to Owain Glyndŵr, the nephew of one of their father's wives and descended from many of the native Welsh princes including Llewellyn the Great. Rhys was executed in 1412 at Chester, and following Glyndŵr's demise much of the Tudors' lands were taken by the English crown, with the majority regranted to another branch of Ednyfed Fychan's