Friedrich Franz Karl Hecker (September 28, 1811 – March 24, 1881) was a German lawyer, politician and revolutionary. He was one of the most popular speakers and agitators of the 1848 Revolution. After moving to the United States, he served as a brigade commander in the Union Army during the American Civil War.
E. Marlitt is the pseudonym of Eugenie John (December 5, 1825-June 22, 1887), a popular German novelist.
Carl Ritter (August 7, 1779 – September 28, 1859) was a German geographer. Along with Alexander von Humboldt, he is considered one of the founders of modern geography. From 1825 until his death, he occupied the first chair in geography at the University of Berlin.
Edmond Frémy (French: [fremi]; 28 February 1814 – 3 February 1894) was a French chemist. He is perhaps best known today for Frémy's salt, a strong oxidizing agent which he discovered in 1845. Fremy's salt is a long-lived free radical that finds use as a standard in electron paramagnetic resonance spectroscopy.