Adolphe I, Grand Duke of Luxembourg (Adolph/Adolf Wilhelm August Karl Friedrich of Nassau[-Weilburg]) (Biebrich, 24 July 1817 – Schloss Hohenburg, 17 November 1905) was the last Duke of Nassau, and the fourth Grand Duke of Luxembourg.
On 31 January 1844, Adolph married firstly in St. Petersburg Grand Duchess Elizabeth Mikhailovna of Russia, niece of Emperor Nicholas I of Russia. She died less than a year afterwards in childbirth with a stillborn daughter.
On 23 April 1851, he remarried in Dessau Princess Adelheid-Marie of Anhalt-Dessau (Dessau, 25 December 1833 - Schloss Königstein, 24 November 1916), a daughter of Friedrich, Prince of Anhalt-Dessau. They had five children, of whom only two lived to the age of eighteen and to become prince and princess of Luxembourg:
William IV, Grand Duke of Luxembourg (1852–1912)
Prince Friedrich Paul Wilhelm of Nassau (Biebrich, 23 September 1854 - Biebrich, 23 October 1855)
Princess Marie Bathildis of Nassau (Biebrich, 14 November 1857 - Biebrich, 28 December 1857)
Prince Franz Joseph Wilhelm of Nassau (Biebrich, 30 January 1859 - Vienna, 2 April 1875)
Princess Hilda Charlotte Wilhelmine (1864 - 1952), married HRH Friedrich II, Grand Duke of Baden.
In 1892, Grand Duke Adolphe conferred the hereditary title Count of Wisborg on his Swedish nephew, Oscar, who had lost his Swedish titles after marrying without his father's approval. Wisborg (also spelt Visborg) was the old castle in the city of Visby within Prince Oscar's lost Dukedom of Gotland, but the title itself was created in the nobiliy of Luxembourg.
Adolphe

And in later years