Ferdinand I of León

King of León from 1037 to 1065

Ferdinand I (c. 1015 – 24 December 1065), called the Great (el Magno), 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.

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