Ferdinand and Isabella
These two were so enamored of each other that they ruled jointly. Ferdinand and Isabella married in 1469 in order to unify Castile and Aragon. The union was so productive that the newly christened Espana was able to finally banish the Moors from Granada . These two were made for each other. Both were Catholic and both fell madly in love over their mutual hatred of Muslims and Jews. It was a fairy tale marriage. The two had great respect for each other and ruled as a duo. We could just imagine them arguing over who gets to order the latest pogrom in between pillow talk. Their marriage was truly magical, just not for anybody not male and Catholic and a Spaniard. The union helped concentrate power as well as provide a secure base to launch an empire. The Reconquista was already well under way, but the marriage sped up the process. Their grandson later went on to rule the Holy Roman Empire (present day Germany and parts of Central Europe). Then again, the Spanish Inquisition killed a lot of people and well, you know what happened with Latin America.