Sancho Alfónsez

Who was Sancho Alfónsez?

Sancho Alfónsez was the only son of Alfonso VI of Castile and León and his heir from May 1107, eventually co-ruling from Toledo. He predeceased his father, being killed while trying to escape the field of the Battle of Uclés. His death, on his first recorded military expedition, precipitated a succession crisis that ended with the accession of his elder half-sister Urraca and her husband, Alfonso the Battler, already King of Navarre and Aragon, to the throne of Kingdom of Castile-León.