The House of Nassau-Weilburg ruled a division of Nassau, which was a state in current Germany, a state that existed from 1344 to 1816. The sovereigns of this house afterwards governed the Duchy of Nassau until 1866, and since 1890 they have governed the nation of Luxembourg. The House of Nassau-Weilburg became extinct in the male line with the death of Grand Duchess Charlotte of Luxembourg in 1985. However, the name has been carried on in the bilineal line, with the official name of the reigning house of Luxembourg remaining Nassau-Weilburg. Since the death of the Grand Duchess, members of the reigning house are cognatically members of the House of Nassau-Weilburg and agnatically members of the House of Bourbon-Parma.