6th » Henry David Thoreau leaves Walden Pond and moves in with Ralph Waldo Emerson and his family in Concord, Massachusetts.
12th » Mexican–American War: the Battle of Chapultepec begins.
13th » Mexican–American War: Six teenage military cadets known as Niños Héroes die defending Chapultepec Castle in the Battle of Chapultepec. American troops under General Winfield Scott capture Mexico City in the Mexican–American War.
14th » Mexican–American War: Winfield Scott captures Mexico City.
Famous Birthdays on September in 1847
5th » Jesse James, American criminal and murderer (d. 1882)
14th » Fanny Holland, English actress and singer (d. 1931)