Bad Karlshafen
On 6 August 1846 the body responsible for building the line was named the "Elector Frederick William Northern Railway Corporation" ("Kurfürst-Friedrich-Wilhelms-Nordbahn Aktiengesellschaft"). The line was named "Carlsbahn" after Bad Karlshafen, which was called "Carlshafen" until 1935. Its name means "Charles' Port" and it was named after Charles I (Hesse's ruler from 1670 to 1730) on its foundations by French Huguenots in 1699.