Please, please, please forgive the late reply. Thank you for your information. Other family in Oaxaca and EL D.F. discovered the info you refer to. They, and we, are LDS (Mormon).
I was told by a family friend from Etla that Porfirio Diaz's personal Dr was a Castellanos from Etla,perhaps a brother, and that he migrated to the US after Diaz's demise.
We'd be pleased to accompany and translate, $$ permitting. We're wholey dependent on SS.