Both of my g-parents were López, from the same area:
Mocorito: San Benito-Loma Redonda.
They move to Hermosillo, Sonora.
my g-pa name was Francisco López Gámez
and my g-ma, Ma. de Jesós López Galindo,
my g-pa had 2 sisters one named Nemecia and the other one Leonor López.
Ask your mom y she remember this names.
Thank you for your attention.