Original: Juan Donoso CortÃ s , marquÃ s de Valdegamas ( May 6 , 1809 â '' May 3 , 1853 ) , Spanish author , political theorist , and diplomat , was born at Valle de la Serena ( Extremadura ) .
Simplified: Juan Donoso CortÃ s , marquÃ s de Valdegamas ( May 6 1809 ; Valle de la Serena ( Extremadura ) - May 3 , 1853 ) was a Spanish author and diplomatist .