Sir Henry Gloster Armstrong KCMG KBE (17 January 1861 – 6 February 1938), was an Irish-born diplomat for the United Kingdom, spy and businessman.
In reality, he was selected by Major Nicholas Gosselin, who had taken charge of Special Irish Branch at the Home Office, as a spy operative tasked with infiltrating Irish-American secret societies including Fenian organisations.
[4] In this capacity, Armstrong served as the manager and secretary of the Mexican Land and Colonization Company and visited South America several times.
With his first wife, he was the father of one son and two daughters:[6] On 21 November 1912 Armstrong married Margaret Hanway (1877–1953),[17] who became known for her involvement in Catholic charities of New York.
[19] She was a daughter of Irish-born editor and writer Patrick J. Hanway and her mother who grew up in a Brooklyn home where Walt Whitman was a frequent guest.
[1] Sir Harry died of pneumonia on 6 February 1938 at his son's home in Port Washington, New York,[3] and was buried at Holy Cross Cemetery, Brooklyn.