The squadron of four galeras, or galleys, was in charge of Captain Diego de Medrado.
"History of the United Netherlands, 1586-89, Vol. II. Complete"
John Lothrop Motley Last Updated: February 7, 2009
It was impossible to descend, for after these three days Captain Melgosa and one Juan galeras and another companion, who were the three lightest and most agile men, made an attempt to go down at the least difficult place, and went down until those who were above were unable to keep sight of them.
"The-Grand-Canyon-of-Arizona-how-to-see-it"
James, George Wharton