It is similar, but most Welsh dragons have 4 legs, and are usually red, no? we appear to be dealing with one that has two legs and a tail-appendage making 3 limbs plus wings. That would make it a Wyvern, Lindworm, or Vibria perhaps?
Klagenfurt seal of 1512
Some others from around Europe
Saint Michael and the angels fighting the Wyvern.…
Unknown, but taken out of the Liber Floridus (1448) - Shuker, K. (2006).
Draken. Een geïllustreerde geschiedenis. Kerkdriel: Librero. You are not allowed to view links.
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Terni
I especially like that last one with the tail that resembles the feet (although they all have some aspect of that), and the dragon mane