The Imperial and Royal Dragon Court was based upon an ancient bloodline tradition stemming from ancient Egyptian, Mesopotamian, and Scythian lineages. There are historians that say that the Scythians belonged to the ten lost tribes of Israel.
The Druids Kings were descended from Scythian royalty, and this bloodline was associated with a Dragon symbology, portrayed as a dragon or serpent in many European myths and legends.
There is a Red Dragon on the Windsor Coat of Arms.
...actually they are closer related to the Huns...
https://www.youtube.com/watch?v=CbYywCHckUs
The House of Drakul (Dracula), descending from Attila the Hun, was established in Central Europe by the sons of Genghis Khan, of which Prince Charles claims direct ancestry. Hun was a derogatory term used to describe Germans in the past.