High Quality Content by WIKIPEDIA articles! The Hartford Convention was an event spanning from December 15, 1814–January 4, 1815 in the United States during the War of 1812 in which New England`s opposition to the war reached the point where secession from the United States was discussed. The end of the war — with a return to the status quo ante bellum — disgraced the Federalist Party, which disbanded in most places.