Queen Sonja in the context of "Harald V"

The monarchy of Norway is the system used in Norway by which a hereditary monarch reigns as head of state under a constitutional monarchy with a parliamentary system. The Norwegian monarchy can trace its line back to the reign of Harald Fairhair and the previous petty kingdoms which were united to form Norway; it has been in unions with both Sweden and Denmark for long periods.

The present monarch is King Harald V, who has reigned since 17 January 1991, succeeding his father, Olav V. The heir apparent is his only son, Crown Prince Haakon. The crown prince undertakes various public ceremonial functions, as does the king's wife, Queen Sonja. The crown prince also acts as regent in the king's absence. There are several other members of the royal family, including the king's daughter, grandchildren and sister. Since the dissolution of the union between Norway and Sweden and the subsequent election of a Danish prince as King Haakon VII in 1905, the reigning royal house of Norway has been a branch of the Schleswig-Holstein-Sonderburg-Glücksburg branch of the House of Oldenburg; originally from modern-day Schleswig-Holstein in Germany, agnatically (through Prince Philip) the same royal house as the British (since the accession of Charles III), Danish and former Greek royal families.

Haakon, Crown Prince of Norway (Norwegian pronunciation: [ˈhôːkʊn]; Haakon Magnus; born 20 July 1973) is the heir apparent to the Norwegian throne. He is the only son of King Harald V and Queen Sonja.

Haakon represents the fourth generation of the sitting Norwegian royal family of the House of Glücksburg. He married Mette-Marit Tjessem Høiby, with whom he has two children, Princess Ingrid Alexandra and Prince Sverre Magnus.

Princess Märtha Louise of Norway (born 22 September 1971) is a member of the Norwegian royal family, but is not a member of the royal house and has no public role. Märtha Louise is active within alternative therapy and spiritual practices, and is a self-described clairvoyant. She is married to Durek Verrett.

A member of the House of Glücksburg, Märtha Louise was born in Oslo in 1971 to then-Prince Harald and the former commoner Sonja Haraldsen. At the time she had no inheritance rights to the Norwegian throne. This changed in 1990, when she was included in the line of succession to the Norwegian throne, where she is currently fourth. Her father became king in 1991.