Tierra de Campos
Gonzalo Rodríguez Girón ( 1160–1231), also known as Gonzalo Ruiz Girón, firstborn son of Rodrigo Gutiérrez Girón and María de Guzmán, was one of Castile's wealthiest and most powerful nobles. He was based in Tierra de Campos, and was among the most loyal supporters of King Alfonso VIII of Castile, Berengaria of Castile, and later of King Ferdinand III.