Princess Ragnhild, Mrs Lorentzen, was the eldest child of King Olav V of Norway and Princess Märtha of Sweden. She was the older sister of King Harald V and Princess Astrid. She was the first Norwegian royal to have been born in Norway since the Middle Ages. In 1953 she married the industrialist Erling Lorentzen, a member of the Lorentzen family of shipping magnates. In the same year they moved to Brazil, where her husband was an industrialist and a main owner of Aracruz Celulose. She lived in Brazil until her death 59 years later.

Olav V was King of Norway from 1957 until his death in 1991.