One of the sons of Duke Friedrich and duchess Charlotte
Duke JOSEPH Georg Friedrich Ernst Karl 1789-1868 married 1817 Amalie Dss of Württemberg 1799-1848
Children
Alexandrine Marie Wilhelmine Katharine Charlotte Therese Henriette Luise Pauline Elisabeth Friederike Georgine 1818-1907 married 1843 King Georg V of Hannover 1819-1878
Pauline Friederike Henriette Auguste
1819-1825
Henriette Friederike Therese Elisabeth
1823-1915
Elisabeth Pauline Alexandrine
1826-1896 married 1852 Peter II, Grand Duke of Oldenburg 1827-1900
Alexandra Friederike Henriette Pauline Marianne Elisabeth 1830-1911 married 1848 Constantine, Grand Duke of Russia 1827-1892
Luise
1832-1833
Here a painting of his family I have posted before: duke Joseph, duchess Amalie and their daughters Elisabeth (grandduchess of Oldenburg) Therese (not married) and Marie (queen of Hannover) all looking at another painting possibly their sister Alexandra (grandduchess Alexandra Iosifowna of Russia).