Rueda is a rather common name in several places in Spain, but Rueda de Jalón had been always a pivotal center to control and to close, eventually, access by the Castilians to the river Ebro, through the river Jalón, whose sources, located near Medinaceli area, a Castilian area, provided water and fodder for the brisky trade outspots along the river, heavily populated by Muslim farmers and Jewish traders and money changing quarters.