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.

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.