Patty's family tree

Believe me, after more than 10 years of patiently searching for my grandmother's name
and background and finding literally nothing,my patience is running out but I haven't
yet given up. She doesn't seem to exist in any records I've searched and I don't know her maiden name, so how to find her? She was born about 1892, I believe in Mexico, but have no proof. I am now researching the surnames of Guerrero, Sanchez, Flores, in Guadalajara, based on a family group photo from about 1908.
I have looked for a marriage record (not found) for Francisco Sanchez Guerrero
as I am hoping he is my grandmother's father, which would lead to breaking down
my huge brick wall. You can see a photo of my grandmother, Alma Blanche holding a
baby, the Guerrero family photo with her seated in the center row, and a photo of Jesus Sanchez Guerrero. But due to an older age, I think his brother, Francisco
might be my grandmother's father and the man in the photo. To see the photos please
go to the "latest images" link on the right side of the page.
Patty, thanks so much for your info but the names don't seem to match my searches.