Siblings: Princess Ingrid Alexandra (b. January 21, 2004) Prince Sverre Magnus (b. December 3, 2005, Mette Marit and Haakon's daughter and son), Manuel (b. 1999 or 2000, his father's wife Celine Maktabi's son from a previous marriage) and a half-brother (b. March 6, 2005, Morten and Celine's son).