Born in Boston on July 22, 1885, Louis J. Gallagher entered the Society of Jesus on August 15, 1905, was ordained as a priest in 1920, and worked as the headmaster of Xavier High School in New York City (1921–22).
In September 1923 the Bolsheviks told the American Jesuits that Bobola's relics had been taken to a medical museum ("Hygiene Exhibition" of the People's Commissariat for Health in Moscow) and allowed them to be taken to the Vatican.
[4][5] Accordingly, on October 3 Walsh and Gallagher securely packed the body[5] (later described by an American journalist as a "remarkably well-preserved mummy"[4]) at the museum, and took it to one of Moscow's train stations.
[7] Gallagher also was one of the founders of the Institute of Social Order (1941–43), and served as the archivist of the New England Province of the Society of Jesus,[1] and later (1954–1970) as the historian for the Jesuits of Georgetown University.
It was reported in 2009 that the Polish director Robert Gliński was planning to shoot a movie about Walsh's and Gallagher's adventures in Russia, under the title Łowca dusz ("Soul Hunter").