Origin
El Coyote is the masked persona of Don César de Echagüe, a rich California landowner who after studying in Spain returns to his lands in California in 1851 and finds that while he was away it has been invaded and conquered by Yankees obsessed with taking hold of the gold mines owned by the Hispanic inhabitants of the newly incorporated territory.
To fight this Don César leads a double life: as a cowardly hidalgo and as an intrepid and fearless champion of the rights of the Hispanos, in the guise of El Coyote, with mask and cloak, and Leonor de Acevedo for a girlfriend, his arch enemy is the ruthless General Clarke from America.
Creators
El Coyote was a Spanish language Pulp hero written by José Mallorquí Figuerola (1913-1972) starting in 1944 the character appeared in 192 novels and later appearing in two different comic book series, as far as I know they have never been translated into English; however they have appeared in German translations.