An American author and abolitionist, born at Cambridge, Massachusetts; graduated at Harvard, and took orders, but resigned in 1858 to devote himself to politics in the anti-slavery interest; during the Civil War he commanded the first regiment of freed slaves; subsequently he resumed literary work, and in 1880 became a member of the Massachusetts Legislature; he wrote a "History of the United States," "Army Life in a Black Regiment," &c.; b . 1823.