Dear EstherMy Grandfather had a son in Fresnillo Zacatecas they are a large family from what I understand His sons name is Guadalupe Castaneda and even has businesses with that name that are very well known in that part of the country. He also has a son by the same name. Unfortunetly I do not know very much about them ,but hope to visit and find out soon. I do not even know Guadalupe's wifes name or all of the children. But I do know there are many of them.