Unfortunately there is not enough information to know who this family is or when it was taken.
The picture was taken by A. J. Gonzalez in Guadalajara, Mexico.
The inscription on the back was hard to read because it has faded and there is a little bit of damage. I have done my best to transcribe it, and I used Google Language Tools to translate it.
a mi inolvidable esposo Heran
Liempve que veas el presente con
un ve cuerdo a ha fiel esposa e hijos jamas he olvi davan.
my unforgettable husband HeranI know it doesn't make too much sense. If you can figure out exactly what this says, please let me know. That would be a start in helping to identify this family.
Liempve you see this with
wise to have a go faithful wife and children
I have never forgotten Davan.