His father was Pedro de los Santos Coy, and his mother was Francisca de Morales.
He married Margarita de la Garza Falcon, daughter of Sgt. Major Juan de la Garza Falcon and Maria Margarita Rodriguez de Montemayor.
Antonio de los Santos Coy. He married Maria del Bosque, daughter of Pedro del Bosque and Maria Flores de Valdez.