Hieronymus Carl Friedrich von Münchhausen (; 11 May 1720 – 22 February 1797) was a German nobleman and a famous recounter of tall tales. He joined the Russian military and took part in two campaigns against the Ottoman Turks. Upon returning home, Münchhausen is said to have told a number of outrageously farfetched stories about his adventures. Münchhausen's reputation as a storyteller has been exaggerated by writers, giving birth to a fully fictionalized literary character usually called simply Baron Munchausen. Münchausen syndrome and the Münchhausen trilemma are named after him.