Autograph signature of Rodrigo Díaz, [also] called El Cid, in a document by him that [reflects that he] makes a donation to the Cathedral of Valencia.  [The o]riginal [is] in [the] Archive of the Cathedral of Salamanca, box 43, list 2, number 72.  It reads in Latin: ego ruderico, "I, Rodrigo".
File:Firma del Cid.jpg
Rodrigo Díaz de Vivar (c. 1050-1099)Created in vector format by P4K1T0