August Christoph Carl Vogt was a German scientist, philosopher, popularizer of science, and politician who emigrated to Switzerland. Vogt published a number of notable works on zoology, geology and physiology. All his life he was engaged in politics, in the German Frankfurt Parliament of 1848–49 and later in Switzerland.

Charles (Karl) Theodor Christian Friedrich Follen was a German poet and patriot, who later moved to the United States and became the first professor of German at Harvard University, a Unitarian minister, and a radical abolitionist. He was fired by Harvard for his abolitionist statements.