Thread:ZARGH80/@comment-37602899-20191011203048

Byzantine empire clearly said that Spain was the successor of the Romeball and yes byzantine and Mongol had alliance

https://en.wikipedia.org/wiki/Byzantine%E2%80%93Mongol_alliance

In Byzantineball's page   Spainball - My niece, though we have differences, I named her true successor of Romeball as my clay was taken away from me by Ottoman Kebab.

and finally https://en.wikipedia.org/wiki/List_of_titles_and_honours_of_the_Spanish_Crown 