His father was Pedro de los Santos Coy, and his mother was Francisca de Morales.
He married Ana Gonzalez de Quintanilla.
He married Angela Berlanga Lobo Guerrero, daughter of _Lopez Berlanga and Margarita Lobo Guerrero. It was his second marriage.
Juana Francisca de los Santos Coy. She married Juan Antonio de la Garza, son of Gabriel de la Garza.
Agustina Cayetana de los Santos Coy. She married Miguel Matias Baez de Treviño on 30 Jan 1726 in Monterrey.
Pedro de los Santos Coy. He married Juana Nicolasa Villarreal. He married Maria Antonia Gomez Rodriguez.
Maria Eugenia de los Santos Coy. She married Juan de la Garza, son of Gabriel de la Garza and Clara de la Garza. Her husband died in Jun 1714. Cause of death: killed by Indians. He was 38 years old.
Lazaro de los Santos Coy. He married Ana Maria de la Garza Cavazos on 17 Aug 1715 in Monterrey.
Francisco de los Santos Coy. He married Maria Josefa de Jesus de Elizondo, daughter of Tomas de Elizondo and Maria de Villarreal on 28 Apr 1710 in Monterrey.