His father was Lazaro de la Garza Falcon, and his mother was Petronila de Montemayor.
In 1693, he requested a dispensation to marry Antonia Cantu. Dispensation source: Guerra, et. al., Index to the Marriage Investigations of the Diocese of Guadalajara, p.38.
Maria Josefa de la Garza. In 1723, she requested a dispensation to marry Juan de la Garza, son of Juan de la Garza Falcon and Maria de Ayala.
Joseph de la Garza. In 1730, he requested a dispensation to marry Maria Rosa de Villarreal, daughter of Marcos de Villarreal and Maria Flores. In 1721, he requested a dispensation to marry Nicolasa Cantu.
Lugarda de la Garza. In 1721, she requested a dispensation to marry Joseph Cantu.