How the Danish monarchy evolved from elective roots to a modern, popular hereditary institution

Wars & Conflicts · Published 15 October 2026 Swipe more like this →

In short: The Danish royal family maintains remarkably high approval ratings, often exceeding 90 percent. While their lineage traces back to the House of Oldenburg, the institution has undergone centuries of constitutional shifts, from the 1665 Lex Regia to modern reforms that established absolute primogeniture and redefined royal titles for the next generation.

The Danish monarchy transitioned from a theoretically elective system to a hereditary one in 1660. This was formalized by the 1665 Kongeloven, or Lex Regia, which established the reign of King Frederick III and his descendants. For centuries, succession followed complex rules, including semi-Salic primogeniture, which prioritized male heirs. These rules were tested in the 19th century when Frederick VII lacked children, forcing a modification in the 1852 London Protocol to ensure the continuity of the duchies of Schleswig, Holstein, and Lauenburg alongside the Danish crown.

Constitutional evolution continued into the 20th and 21st centuries. A 1953 referendum introduced male-preference primogeniture, allowing women to inherit the throne if they had no brothers. By 2009, a further amendment established absolute primogeniture, ensuring that the eldest child inherits the throne regardless of gender. These changes reflect a broader trend of modernization within the institution. For instance, in 2022, it was announced that the children of Prince Joachim would lose their princely titles starting in 2023, transitioning to the title of Count or Countess of Monpezat, though they retain their positions in the line of succession.

The family's reach extends beyond Denmark through historical ties to the Greek and Norwegian royal houses. Figures like George I of Greece and Haakon VII of Norway were born as Danish princes before ascending to foreign thrones. While some descendants of these branches maintain royal titles, their succession rights to the Danish throne have been restricted or revoked over time. Today, the family operates under a framework where the monarch remains the ultimate authority for members of the bloodline, as stipulated by the remaining articles of the 1665 Lex Regia, while simultaneously enjoying widespread public support.

General information, not professional advice. Spotted an error? Flag the card or see corrections and complaints.

Intellect Plus is a visual educational discovery platform for exploring fascinating facts and ideas. Brain Food, Not Brain Rot. What is Intellect Plus?

Related

• Denmark’s monarchy is over 1,200 years old, yet its modern power is purely symbolic.
• The Danish King who traded absolute power for a constitution and a commoner bride
• How one woman’s dynastic ambition turned her family into the royalty of Europe
• How a minor prince became the father-in-law to the royal houses of Europe
• The obscure prince who became the ancestor of modern European royalty
• The French jet that dropped the final NATO bombs of the Libyan war
• The rifle born from a mandate of national self-reliance
• How a sleek French delta-wing fighter became a global icon of Cold War air power
• The aircraft so difficult to fly it was dubbed a 'Beast'
• How a former progressive talk show host became a prominent conservative media influencer
• How a crumbling socialist federation ignited a brutal four-year war for Croatian independence
• David Hackworth was a decorated war hero who became the military's fiercest public critic.

More in Wars since 1945 · More in Wars & Conflicts · Latest · A–Z · All topics