My grandmother, Abelina Gonzalez Pena, was the daughter of Juan Gonzalez and Maria del Rosario Pena. They lived in neighboring Los Aldamas. Abelina ended up marrying my grandfather, Alonzo Perez Solis, who was from Lalaja. Juan Gonzalez was an official in Los Aldamas...a judge or police, I think.
Juan Gonzalez from Los Aldamas may have had a brother named Fransisco....it would be interesting to look at the birth certificate to see if the name appears...I will try to look for that today and let you know.
Back in 1977, the archivist of Lalaja was an Antonio Salinas. I don't know if he is till alive today. I interviewed a Jose Maria Garza Gonzalez back then and found out that Lalaja was founded in 1683 by Capitan Nicolas de la Serna.