King Ferdinand of León and Castile I

  General Notes:

http://en.wikipedia.org/wiki/Ferdinand_I_of_León

Called the Great (el Magno), he 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 (1056), 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. While Ferdinand inaugurated the rule of the Navarrese Jiménez dynasty over western Spain, his rise to preeminence among the Christian rulers of the peninsula shifted the locus of power and culture westward after more than a century of Leonese decline. Nevertheless, "[t]he internal consolidation of the realm of León\endash Castilla under Fernando el Magno and [his queen] Sancha (1037\endash 1065) is a history that remains to be researched and written."

Ferdinand married Sancha of León, daughter of King Alfonso of León V and Elvira Mendes of Portugal. (Sancha of León was born in 1013 and died on 27 Nov 1067.)