Henry IV of Castile
In the 14th century, Navas de San Juan and Castellar formed, by royal appointment, the lordship of Santisteban, delivered by Henry II of Castile to Men Rodríguez Benavides. In 1473 Henry IV of Castile turned it into a county, granting Don Diego Sánchez de Benavides the title of Count of Santisteban.