El título de Condes de Castellar (1539) Historical milestone · Castellar de la Frontera, Campo de Gibraltar, Cádiz Image of Castellar de la Frontera, not of the place itself. In 1539 Charles I granted the Saavedra family the title of Counts of Castellar, consolidating the family's seigneurial rule over the town and its castle. 1539 Photo: Luis Rogelio HM (CC BY-SA 2.0) What to see and do in Castellar de la Frontera