Frederik and Mary were among the guests who celebrated the wedding of Thomas Olsen (37) and Annette Petersen, at Holckenhavn Slot on the island Fyn.
Thomas Olsen is an IT millionair and investor. He's known for having bought and sold various Danish footbal clubs. Although not often on the foreground, Thomas and his wife Annette are friends of Frederik & Mary's. They also assisted at their wedding in 2004.
The castle isn't the couple's home. It was 'just' their wedding venue.