My Grandmother changed her last name when she came to the states, but her real name was Emila Contreras Mendoza.I really don't know much more because she doesn't like talking about her families past.But this is what I found out over Thanksgiving.
Aurelio Mendoza married Maximiana Mendoza Gomez.
Had Alfredo Mendoza Gomez married Paula Mendoza Gomez Mata=(mothers madien surname) (I think they were cousins or something like that but couldn't get more info)
Had Emila Mendoza Gomez (Contreras married surname) Paula, Cuca, Ofelia are some of her sisters.... married Pedro Contreras Molina
I also know that they are from Lazaro Cardenas.My mom went to college in Las Guacamayas for accounting and seamstres.
I have more information, if any names sound familiar please email me at email@example.com