Karl Gustav Rümelin, later Charles Reemelin (May 19, 1814 in Heilbronn, Germany - January 16, 1896 in Cincinnati, Ohio)[1] was an American politician, author, lawyer and insurance salesman of German origin.

[2] Charles Reemelin was the son of the spice dealer Benjamin Rümelin.

He arrived in Philadelphia with the American brig Isabella after 87 days.

After his emigration in 1832, Karl Gustav Rümelin changed his name to Charles Gustus Reemelin.

[3][4] He was a pioneer for Carl Schurz, a Close friend of Salmon Chase,[1] and politically active as a supporter of the Democratic Party.