Perhaps this location 20 km northwest of Cuellar.
There was my Cid, the good man in battle, who fought well upon his gilt saddle; and Alvar Fanez Minaya, and Martin Antolinez the Burgalese of prowess, and Muno Gustios, and Martin Munoz who held Montemayor, and Alvar Alvarez, and Alvar Salvadores, and Galin Garcia the good one of Aragon, and Felez Munoz the nephew of the Campeador.