El Cid owned two swords, Tizona and Colada. They seem like pretty good candidates for being artifacts in the game, but aren't present.
https://en.wikipedia.org/wiki/Tizona
https://en.wikipedia.org/wiki/Colada
One of these swords, Tizona, can be seen at the Museo de Burgos in Spain.
https://en.wikipedia.org/wiki/Tizona
https://en.wikipedia.org/wiki/Colada
One of these swords, Tizona, can be seen at the Museo de Burgos in Spain.