Autograph Letter Signed, in Spanish, to George Erving

The recipient, George William Erving (1769-1850), was U.S. Minister to Spain, 1814-19. 2 pages. 16 lines of Spanish text. In good condition despite slight discoloration. Neatly attached down one edge to blank sheet of paper. Docketed (by Erving?) 'From the Duke of Osuna (his family name Francisco Giron)'. One of the subjects is "La Guerra a los Ingleses".