Admitted to Cumberland County (Maine) bar, 1837. Edited Eastern Argus, 1839-1844. Chief clerk Navy Department, 1845-1848, Department State, 1848.
Charge d’affaires, Bolivia, 1848-1849. Member United States House of Representatives (Democrat) from Maine, 32d Congress, 1851-1853. United States secretary legation in London, England. under Ambassador (later President) Buchanan, 1855-1856.
Assistant secretary of state United States, 1857-1860. Minister to Russia, 1860-1861.
Born February 11, 1815