Somehow not mentioned in the Wiki page, but Guerrero actually means Warrior in Spanish. So I get the last name comes from him (?), unverifiable of course.
EDIT: Several people pointed out that the surname “Guerrero” has existed in Spain long before the 1500s, so my guess about it originating with Gonzalo Guerrero was off. Thanks for the corrections—leaving the rest of my comment for context.
There's that lovely phenomenon, I can't recall the name, of people that live to their name. Like a cook who's named Jon Cook, a gardener who's named Phil Gardener, you get it.
Well, it may surprise you to know that surnames such as "Cook" and "Butler" are occupational and actually derive from men, centuries ago, who were actually cooks or butlers and eventually coined a newfound surname from that occupation (which may often be passed down father-to-son.)
So if a modern fellow is named "Jon Cook" it may indeed be a regression hearkening back to one or more of his ancestors and how they were named.
I am more accustomed to "nominative determinism" being associated with a person's given name, and how they grow up to take on a given role.
Somehow not mentioned in the Wiki page, but Guerrero actually means Warrior in Spanish. So I get the last name comes from him (?), unverifiable of course.
EDIT: Several people pointed out that the surname “Guerrero” has existed in Spain long before the 1500s, so my guess about it originating with Gonzalo Guerrero was off. Thanks for the corrections—leaving the rest of my comment for context.