Isabella I was Kings of Castile. She and her husband, Ferdinand II of Aragon, laid the foundation for the political unification of Spain under their grandson, Charles V, Holy Roman Emperor....
Infanta Isabella Clara Eugenia of Spain, was, together with her husband Albert VII, Archduke of Austria joint sovereign of the Spanish Netherlands in the Low Countries and the north of modern France....
Isabella II was List of Spanish monarchs She was Spain's first and so far only queen regnant, although she is sometimes considered the third Queen Regnant of Spain, as previous monarchs of Leon and Castile were counted as kings and queens of Spain....
