Then, Winter would be related to Sunny, and then if you consider the dods to be siblings, then Sunny is also SeaWing, RainWing, and NightWing royalty. If Clay marries Peril and Peril was adopted by Scarlet, then Sunny will also be SkyWing royalty.
But everybody thinks that they just stole it the only way that they wouldn't have an arrest dragons right now is if they got an entire new Royal bloodline