Just happened to come across your post. I too would like to find some info on this subject. I have heard the stories like yourself of 3 brothers that came from Spain and settled in different areas. My grandfather, and my father (and that's as far as I can go back) is a Caballeros, but from Guatemala, C.A. I do not doubt that all the people that have contacted you have some branch of the family tree in their past. Good luck with your search.