Prince Claus of the Netherlands, Jonkheer van Amsberg (6 September 1926 – 6 October 2002) was Prince of the Netherlands from 30 April 1980 until his death on 6 October 2002, as the husband of Queen Beatrix. Prince Claus of the Netherlands, Jonkheer van Amsberg (6 September 1926 – 6 October 2002) was Prince of the Netherlands from 30 April 1980 until his death on 6 October 2002, as the husband of Queen Beatrix.