As a tribe they are now almost extinct, but the modern Gauchos of Uruguay have much Charrua blood in them.
The fable of the centaurs, if the derivation from to goad, Taupos, bull, be accepted (but see Centaur), would indicate the early existence of pastoral peoples living on horseback, like the modern cowboys (cp. "cow-punchers") or gauchos of North and South America.
How would you define gauchos? Add your definition here.