Cid
Encyclopedia article; The Columbia Encyclopedia, Sixth Edition, 2007
...the 12th cent., has served as basis for numerous treatments, notably the plays by Guillen de Castro y Bellvis and Pierre Corneille. See R. Menendez Pidal, The Cid and His Spain (2 vol., 1929, tr. 1934, repr. 1971); R. Southey, ed., Chronicle...