My grandfather was born in Georgetown, British Guyana within 8 years of your John Camacho. I think they may have been brothers. My grandfather's name is Joseph Fernandes Camacho born November 4, 1892. He emigrated to New York, New Jersey and Connecticut locations as an adult.
I have just made contact with my long lost Uncle in California (I am in Connecticut)and started some genealogy dialog with him.Contact me by email.This way we can more conveniently share info in the future if the relationship between your John and my Grandfather turn out to be correct.My email is email@example.com at work and firstname.lastname@example.org at home.