House of Württemberg
Nicholas died on 22 February 1903. At his death the third branch of the House of Württemberg (Carlsruhe) became extinct in the male line. His funeral took place on 27 February 1903. According to his will, Carlsruhe was passed to King William II, which he had from 1903 to his death in 1921, annually the King spent several weeks in hunting vacation at Carlsruhe. After The King's death Carlsruhe and the headship of the House of Württemberg went to Duke Albrecht (1865–1939).