Towards the beginning of the twelfth century the anonymous author of the Historia Silense wrote that he was killed in Medinaceli.
It was copied during the second half of the 16th century and kept at the library of the Duke of Medinaceli's house, hence its name.
The "Toro Jubilo" or Toro embolado in Soria, Medinaceli, Spain, is a festival associated with animal cruelty.
In 1368, Bernal de Foix, the first Count of Medinaceli, took the side of the royal bastard Enrique II of Castile against his legitimate brother, King Peter of Castile.
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.