Richard Frothingham, jr., an American historian, born in Charlestown, Mass., Jan. 31, 1812. He was for many years a member of the staff of the "Boston Post," was chosen to the Massachusetts house of representatives by his native town in 1830, '40, '42, '49, and '50, and was mayor of Charlestown for three terms (1851-3). In 1851 he was a delegate to the national convention of the democratic party, and in 1852 promoted the election of Mr. Pierce as president. He was elected in 1853 to the convention called to revise the constitution of Massachusetts, and took an active part in its debates. Ho has published History of Charlestown" (1848);History of the Siege of Boston, and of the Battles of Lexington, Concord, and Bunker Hill (1849); Account of the Bunker Hill Monument" (1840);Life of Gen. Joseph Warren (1865); and Rise of the Republic" (1871).