I have been exploring several families in Guaymas and Hermosillo. Presently, I am seeking info on the Aros and Gallas families of Hermosillo and Guaymas, especially Jose Santos Aros (who was married in the 1830s in Hermosillo).
Santos married Claudia Tapia.
Also of interest is one Francisco Sanchez who married Martina Lopez. They probably lived in Rayon and later moved to Guaymas around the 1840s.
The Gallas and Aros families seem to have roots in Hermosillo going back to the 1700s, but I'm not sure about Sanchez.