Princess Märtha Louise's Birthday in Norway
September 22 · Level 2 · #1817 of 2238
Princess Märtha Louise was born on 22 September 1971 in Oslo. She is the eldest child of King Harald V and Queen Sonja, and her birthday is a small occasion for good wishes in Norway.
How it is celebrated: it is not an official holiday, so the day mostly means warm messages on social media and a mention or two in the news from royal watchers.
In 1990 Norway changed its succession rules so that the eldest child inherits the throne regardless of gender. The change did not apply to those already born, so her younger brother Haakon remained the heir.