1961 film drama starring Charlton Heston and Sophia Loren (2,3)
(Other definitions for el cid that I've seen before include "Ruy Diaz starts" , "C11 Spanish warrior hero" , "Historic fighter" , "Rodrigo Diaz de Vivar was his original name" , "Spanish soldier" .)
(Another definition for elcid that I've seen is " Spanish hero".)