Monica, There doesn't appear to be any connection between our families, according to my father and uncle, my grandfather was the only one of his family to come to the U.S. I have been able to research his family on the net at familysearch.org. What I started doing was just putting in the last name Marquez and Mexico for locality. That gave me a list of all Marquez's and I moved on from there. You may want to try the same site.