Adolphe, Grand Duke of Luxembourg

Adolphe (Adolf Wilhelm August Karl Friedrich; 24 July 1817 – 17 November 1905) was the last sovereign Duke of Nassau, reigning from 20 August 1839 until the duchy's annexation to Kingdom of Prussia in 1866. 
In 1890, he became Grand Duke of Luxembourg following the death of King William III of the Netherlands, ending the personal relationship between the Netherlands and Luxembourg, until his own death in 1905. 
He was the first monarch of Luxembourg from the House of Nassau-Weilburg.