Grand Duke Guillaume and Grand Duchess Stephanie had an important anniversary to mark this week, as they marked their departure from Fischbach Castle. The royal couple and their children have been residing in the residence for the past six years, but following his accession to the throne, they will be moving to Berg Castle. The residence will now be lived in by Guillaume’s parents, Grand Duke Henri and Grand Duchess Maria Teresa. To mark their departure, Guillaume and his family hosted a party in the grounds of the residence for the citizens of the town of Fischbach. A statue of the royal couple was unveiled in the nearby town as hundreds of residents headed to enjoy the festivities. But two special guests ended up stealing the show at the event, those being Guillaume and Stephanie’s two children, Prince Charles, six, and Prince Francois, three. The Luxembourg royals prepared to leave their home The royal brothers looked adorable dressed in matching striped shirts. Guillaume could be seen being a doting dad as he carried his youngest …