G-Man (slang) G-Man (slang) G-Man (short for "Government Man") is an American slang term for special agents of the United States Government. It is specifically used as a term for a Federal Bureau of Investigation (FBI) agent. "G-Man" is also a term used for members of G Division, essentially a British anti-rebel police unit operating out of Dublin Castle prior to Irish Independence in 1922. Colonel Ned Broy uses the term in his official testimony for the Irish Army's Bureau of Military History in their archive of the Easter Rising (1916) and the Irish War of Independence (1919-1921). According to the "Merriam-Webster
John G. Wilson John G. Wilson John Guy Wilson (1842–1892) was a Manchester, UK patent agent and the founder of Wilson Gunn, one of the oldest firms of Patent and Trade Mark Attorneys in the UK. As a side line he acted as agent to the Alliance Insurance Company. There is no record that Mr. Wilson ever became a member of the Chartered Institute of Patent Agents. An extract from a Manchester trade journal of the time is shown below: Mr. John G. Wilson, Practical Mechanical Engineer, Draughtsman, and Patent Agent, 55 Market Street – To the inventor and man of genius labouring