Тьерра-де-Кампос
Fernando Ansúrez I (died in or shortly after 929) was the Count of Castile in 929 and the earliest known member of the Beni Ansúrez family; his father, Ansur, is known only through his patronymic. He was also count of the Tierra de Campos, which was later formed into the County of Monzón for his son.