My Vicente Briones born in 1727 or 1736 in San Luis Potosi area and married Maria Antonio de Padron was his first wife.
He remarried in 1784 at Mission San Carlos in Monterey, a woman named Mariana, an Indio.
He son Marcos Joseph Briones born in 1757 or 1760 in San Luis Potosi is my ancestor, maybe the brother of your Maria Guadalupe.
Marcos had a daugther he named Maria Guadalupe b 1792 an San Antonio De Padua mission, ca, maybe named after Marcos's sister.
I would like to know Vicente's other children, when he and family migrated to California. I know it was not with De Anza. Also Vicente's parents or his wife parents.