Reading some Walter Raleigh from 1596, came across this unexpectedly:
"This Pedro de Orsua had among his troops a Biscayan called Aguirre, a man meanly born, who bare no other office than a sergeant or alferez: but after certain months, when the soldiers were grieved with travels and consumed with famine, and that no entrance could be found by the branches or body of Amazons, this Aguirre raised a mutiny, of which he made himself the head, and so prevailed as he put Orsua to the sword and all his followers, taking on him the whole charge and commandment, with a purpose not only to make himself emperor of Guiana, but also of Peru and of all that side of the West Indies."
