Battle of Tamarón [SEP] point in time
Battle of Tamarón
The Battle of Tamarón took place on 4 September 1037 between Ferdinand, Count of Castile, and Vermudo III, King of León. Ferdinand, who had married Vermudo's sister Sancha, defeated and killed his brother-in-law near Tamarón after a brief war. As a result, Ferdinand succeeded Vermudo on the throne.
Ferdinand's father, Sancho the Great, who was "jure uxoris" Count of Castile, had entrusted his son with the county as early as 1029. In 1034 he
Ferdinand "super vallem Tamaron". This is Tamarón, a suburb of Burgos in the valley of the Sambol. The location of the battle in Támara de Campos was first made in the thirteenth century by Rodrigo Jiménez de Rada. Támara has never been called Tamarón, nor is it in a valley, though Rodrigo placed the battle near the river Carrión probably out of a confusion between the two.
The earliest source to explicitly date the battle is Pelagius of Oviedo, who writes that Vermudo died in his tenth year (