His father was Marcos Alonso de la Garza y Arcon, and his mother was Juana Treviño Quintanilla.
He married Catalina Martinez Guajardo, daughter of Juan Francisco Martinez Guajardo and Ursula Inez Catarina Navarro Rodriguez.
Juana de la Garza. She married Francisco Botello de Morales, son of Pedro Botello de Morales. Her husband died on 17 Apr 1696 in Monterrey. He was 81 years old.
Isabel Martinez. She married Igancio Botello.