His father was Antonio Cavazos de la Garza, and his mother was Bernarda Rodriguez de Montemayor.
He married Maria Jacinta Fernandez de Castro, daughter of Juan Fernandez de Castro and Agustina Uribe de la Cadena Lobo.
Onofre Cavazos. In 1733, he requested a dispensation to marry Maria Gertrudis de la Garza.