One of the most common problems I see from people wanting to find a person in Mexico, even family, are misspelled names. It only takes one wrong letter to bring your search to a halt.
The most commonly misspelled words are the names of Mexican cities. Even if you speak Spanish, how can you know if you have the correct spelling? Here is a great tip. Go to a search engine such as Google or Yahoo. Type in the city name you have into their search field and wait for the results. If the search engine doesn't recognize the city name, it will usually offer you another spelling for the word.
In the case of Yahoo, I did a search for Hermosillo misspelling it as hermasilo. Yahoo came back asking, "Did you mean: Hermosillo?" with the correct spelling.
Give this a try and see if this helps get your search moving forward again. It's possible for you to find someone in Mexico, but you want to check that you are working with the right spelling of a person's last names, the city and state. If you are doing Mexico genealogy, you really want to pay attention to the spelling of names; otherwise, you could end up searching in the wrong city for your ancestors.
Good luck on your search. Hasta pronto!
Mexico Family History Expert
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