I think many of my stepbrothers and sisters are in your neck of the woods.
My father, Guillermo Calvo, was from Peru. He had 5 step kidsI believe, which would now be in their 40s or 50s. Lucho, Sylvia, Norma, Memo, and I can't recall the rest. Guillermo's brother and my uncle was Cesar.
I came years later when he was in LA. Ring a bell?