His father was Bernardo de los Santos Coy, and his mother was Juana de Cepeda.
He married Maria de Farias Aguirre, daughter of Joseph de Farias and Ynes de Aguirre.
Juana de los Santos Coy. On 4 Aug 1708, she requested a dispensation to marry Santiago de Arispe, son of Juan de Arispe and Ana de Lizarras y Cuellar in Saltillo.