Alfonso de León IX

Alfonso de León IX was the last King of León who did not also rule over Castile. He married two of his first cousins. Both marriages were annulled by the Catholic Church under grounds of consanguinity. His death caused a minor inheritance dispute between his surviving children.

Trivia

 * Alfonso's 25th great-granddaughter, Alexia, is the only descendent of his (present in the story) that inherited his color scheme. She also shares her zodiac sign with him.