His father was Capt. Blas Maria de la Garza Falcon Treviño, and his mother was Beatriz Gonzalez Hidalgo Navarro.
He married Petronila de Montemayor, daughter of Miguel de Montemayor and Monica Rodriguez Treviño.
He married Maria Inez Saldivar Sosa y Ayala, daughter of Diego de Ayala Treviño and Margarita Saldivar de Sosa on 1 Oct 1673 in Monterrey. It was his second marriage.
Maria de la Garza. She married Diego de Ayala Treviño, son of Jose de Treviño and Leonor de Ayala Valverde on 10 Oct 1673 in Monterrey. In 1684, she requested a dispensation to marry Tomas Garcia de Quintanilla. They were married on 18 Oct 1684. In 1696, she requested a dispensation to marry Andres Gonzalez.
Angela de la Garza. She married Joseph Gonzalez de Paredes, son of Juan Gonzalez and Maria de Olea Camacho.
Miguel de la Garza. In 1685, he requested a dispensation to marry Clara de Renteria.
Francisco de la Garza. He married Maria Martinez, daughter of Capt. Joseph Ignacio Martinez and Maria Ines de la Garza de la Rocha.
Pedro de la Garza. He married Beatriz de Elizondo, daughter of Francisco de Elizondo and Beatriz Gonzalez de Paredes.
Joseph de la Garza. In 1701, he requested a dispensation to marry Josefa de Sosa.
Isidro de la Garza. In 1693, he requested a dispensation to marry Antonia Cantu.
Gertrudis de la Garza. She married Fernando Cantu, son of Geronimo Cantu and Juliana de Treviño.
Monica de la Garza. She married Pedro de Uribe.
Isabel de la Garza. She married Juan de Saldivar.
Manuel de la Garza. He married Teresa Caballero de los Olivos, daughter of Sgt. Maj. Lucas Caballero de los Olivos and Margarita Rodriguez de Montemayor. In 1701, he requested a dispensation to marry Maria Cavazos (Fernandez de Castro).
Juan de la Garza. He married Maria Cayetana Flores.
Marcos de la Garza. In 1707, he requested a dispensation to marry Maria de la Garza.
Lazaro de la Garza. In 1723, he requested a dispensation to marry Maria Gertrudis Martinez.
Lucas de la Garza. In 1724, he requested a dispensation to marry Juana Maria de la Garza.
Josefa de la Garza. In 1712, she requested a dispensation to marry Miguel de Treviño.
Antonio Feliciano de la Garza Sosa, baptized 20 Jul 1677 in San Francisco, Monterrey, NL. In 1707, he requested a dispensation to marry Maria Isabel Cavazos. In 1702, he requested a dispensation to marry Rosa Guajardo.