About Prince Claus of the Netherlands
Prince Claus of the Netherlands, Jonkheer van Amsberg (born Klaus-Georg Wilhelm Otto Friedrich Gerd von 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. Initially a diplomat in the service of West Germany and West German deputy ambassador to Ivory Coast, Claus met Beatrix on New Year's Eve 1963 and married her in 1966. When his wife ascended to the throne in 1980, Claus took his place as Prince of the Netherlands, which he held until his death in 2002. Claus met Princess Beatrix for the first time on New Year's Eve 1963 in Bad Driburg at a dinner hosted by the Count von Oeynhausen-Sierstorpff, who was a distant relative of both of them. On 30 April 1980, Claus' mother-in-law, Queen Juliana, abdicated in favour of Princess Beatrix, who became Queen of the Netherlands.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.