would like a good tv series to watch with kings and queens. already watched Game of thrones and Reign

Try "The Tudors" if you can find it. Great show about Henry VIII of England and his many wives.

I personally love tv show The Crown -- it's about Queen Elisabeth II.. also The Last Kingdom isn't that bad and Vikings is superb (at first wasn't interested in it but got to write a review piece on it for the writing website and I really enjoyed each and every episode)