Myrna:
I was looking up some infromation about my Bringas ancestors and I saw your message.
I live in Guadalajara and I know an Almada family here in Guadalajara. A cousin of mine is married to a member of that family. The grandfather of my cousin's husband was named Ponciano Almada and I know that they are originally from Sinaloa. I'm wondering if they are the same persons that you are looking for.
I also posted a message in the Bringas forum. We might be related!