I saw your message board and noticed you have the same name of my great great grandfather. He comes from Juchipila Zacatecas. He married a woman by the name of Dolores Henriquez. They had a son Salvador, and daughters: Petra(my great grandmother), Felicitas, and Trinidad. Salvador Ruvalcaba also named one of his sons Francisco. They somehow ended up in Los Angeles CA. Any relation? I don't know if they originate from this part of Zacatecas or if they moved there later on. Hope to hear from you.