People Frederick Louis, Hereditary Grand Duke of Mecklenburg-Schwerin German Grand Duke (1778-1819)13 June 1778 – 29 November 1819 Frederick Louis, Hereditary Grand Duke of Mecklenburg-Schwerin13 June 1778 – 29 November 1819Grand Duchess Elena Pavlovna of Russia24 December 1784 – 24 September 1803 Paul Friedrich I, Grand Duke of Mecklenburg-Schwerin15 September 1800 – 7 March 1842Duchess Marie Louise of Mecklenburg-Schwerin31 March 1803 – 26 October 1862 Spouses and partnersGrand Duchess Elena Pavlovna of Russia24 December 1784 – 24 September 1803SiblingsDuchess Louise Charlotte of Mecklenburg-Schwerin19 November 1779 – 4 January 1801ChildrenPaul Friedrich I, Grand Duke of Mecklenburg-Schwerin15 September 1800 – 7 March 1842Duchess Marie Louise of Mecklenburg-Schwerin31 March 1803 – 26 October 1862 From Wikipedia and Wikidata (public domain), updated daily.