Guillaume, Hereditary Grand Duke of Luxembourg

Prince Guillaume, Hereditary Grand Duke of Luxembourg ("Guillaume Jean Joseph Marie"; born 11 November 1981), is the heir apparent to the crown of Luxembourg since his father's became grand duke in 2000.
His style and title in full is: His Royal Highness Prince Guillaume Jean Joseph Marie, Hereditary Grand Duke of Luxembourg, Hereditary Prince of Nassau, Prince of Bourbon-Parma.
On 26 April 2012, the court announced the engagement of the Hereditary Grand Duke to the Belgian Countess Stéphanie de Lannoy. They were married on 19 October 2012.
Guillaume and Stéphanie have a son, named Prince Charles, born on 10 May 2020.