Princess Ingrid Alexandra was born on 21 January 2004 at 9:13 am in The National Hospital, part of the Oslo University Hospital in Oslo. She is the first child and only daughter of Crown Prince Haakon, heir apparent to the throne, and the second granddaughter of King Harald V and Queen Sonja. Her mother, Crown Princess Mette-Marit, has a son named Marius Borg Høiby, born in 1997 from a previous relationship.