Analysis of information sources in references of the Wikipedia article "Filibuster (military)" in English language version.
[...] the term [...] was first used during a debate on the floor of the House on Jan. 3, 1853. [...] Albert G. Brown (D-Miss.) responded: 'When I saw my friend standing on the other side of the House, filibustering, as I thought, against the United States, surrounded, as he was, by admiring Whigs, I did not know what to think.' The vivid word quickly became attached to the practice of making speeches to block legislation.