Re: Chavana - Lampazos, NL
I've done a bit of checking and I found the siblings of Josefa Gertrudis. If you look at the dates when Miguel and Catarina's children were born they fit better with your dates.
FOr instance: Pedro b.1754, Jose Antonio b.1762, Jose Ramon b.1764, and Josefa Gertrudis born 1772.
I don't know why the Mormons have such conflicting dates.
Lets hope we can discover the authentic information.