The article is devoted to an analysis of the life and multifaceted activity of Benjamin Brown French (1800—1870) — an American politician, civil servant, Clerk of the United States House of Representatives, and one of the most influential figures of nineteenth-century American Freemasonry. Particular attention is paid to his role in the history of the American Order of Knights Templar, in which he held the highest office of Grand Master of the Grand Encampment of Knights Templar of the United States during the difficult period of the American Civil War.