Frederick Louis, Hereditary Grand Duke of Mecklenburg-Schwerin German Grand Duke (1778-1819) (1778–1819) Parents Princess Louise of Saxe-Gotha-Altenburg Frederick Francis I, Grand Duke of Mecklenburg-Schwerin Children Paul Friedrich I, Grand Duke of Mecklenburg-Schwerin Duchess Marie Louise of Mecklenburg-Schwerin Magnus von Mecklenburg-Schwerin Albert von Mecklenburg-Schwerin Helene of Mecklenburg-Schwerin Siblings Duchess Louise Charlotte of Mecklenburg-Schwerin Duke Gustav Wilhelm of Mecklenburg-Schwerin Duke Adolf of Mecklenburg-Schwerin Duchess Charlotte Friederike of Mecklenburg-Schwerin Duke Karl of Mecklenburg-Schwerin Partners Grand Duchess Elena Pavlovna of Russia Landgravine Auguste of Hesse-Homburg Princess Caroline Louise of Saxe-Weimar-Eisenach
