Willem-Alexander (Dutch: [ˈʋɪləm aːlɛkˈsɑndər]; Willem-Alexander Claus George Ferdinand; born 27 April 1967) is King of the Netherlands, having acceded to the throne following his mother's abdication in 2013. Willem-Alexander was born in Utrecht as the oldest child of Princess Beatrix and diplomat Claus van Amsberg.
Willem Frederik George Lodewijk was born on 6 December 1792 in The Hague. He was the eldest son of King William I of the Netherlands and Wilhelmine of Prussia . His maternal grandparents were King Frederick William II of Prussia and his second wife Frederika Louisa of Hesse-Darmstadt .
Guillermo Alejandro de los Países Bajos (Willem-Alexander Claus George Ferdinand van Oranje-Nassau; Utrecht, 27 de abril de 1967)  es el actual rey de los Países Bajos desde el 30 de abril de 2013 tras la abdicación de su madre, la reina Beatriz, quien retomó el título de princesa de los Países Bajos