Comital lineage
(number 8 in the register of the Finnish House of Nobility)
Baron Carl Erik Mannerheim (1759–1837) was the son of Baron Johan Augustin Mannerheim. Born in Säter, Carl Erik was part of the Anjala League, an opposition movement during the reign of Gustav III of Sweden. However, he received an amnesty and emigrated to Finland, where he purchased Louhisaari Manor in 1795. In 1805, he was elected Chairman of the Finnish Economic Society. At the beginning of Russian rule in Finland, he was chairman of the delegation accounting for matters in Finland to Tsar Alexander I