Ferdinand I of León and Castile

Biography:

I called the Great was the Count of Castile from his uncle's death in 1029 and the King of León after defeating his brother-in-law in 1037. According to tradition he was the first to have himself crowned Emperor of Spain and his heirs carried on the tradition. He was a younger son of Sancho III of Navarre and Mayor of Castile and by his father's will recognised the supremacy of his eldest brother García Sánchez III of Navarre.