Royal Union of Denmark and Enemy Kingdoms

The Union of Two Sworn Enemies: A Royal Marriage that Redrew the Map

On November 19, 1515, in the city of Worms, Germany, Princess Isabella of Denmark married King Christian II of Denmark, uniting two kingdoms that had been sworn enemies for decades. This marriage was orchestrated by Isabella's brother, King Francis I of France, and King Christian's advisor, the Danish nobleman, Erik Valkendorf. The union was a calculated move to secure a crucial alliance between Denmark and the Holy Roman Empire.

What Everyone Knows

Most people think that the marriage between Princess Isabella and King Christian II was a love match that brought peace between their kingdoms. The standard story goes that the two kingdoms had been at odds for years, but the union of their royal families brought about a new era of cooperation and understanding. However, this narrative oversimplifies the complex web of alliances and rivalries that defined European politics at the time.

What History Actually Shows

Historians like Jørgen Pedersen and Michael Bregnsbo argue that the marriage was a strategic move to counterbalance the growing power of the Swedish kingdom. On January 12, 1513, King Christian II signed the Treaty of Malmö, which formed an alliance with the Holy Roman Empire, and the marriage to Isabella was a key component of this agreement. According to the Danish historian, Hans Linstow, King Christian II was motivated by a desire to secure his borders and expand his kingdom's influence. The fact that Isabella was already engaged to another nobleman, Archduke Charles of Austria, and had to be persuaded to marry King Christian II instead, is a crucial aspect of this story. As noted by the French historian, Pierre-Henri Teitgen, in his book "The Royal Marriages of Europe", the marriage was facilitated by the intervention of King Francis I, who saw an opportunity to weaken the Swedish kingdom and strengthen his own alliances. By 1517, the union had already begun to bear fruit, with King Christian II launching a series of military campaigns against the Swedish kingdom, backed by the military might of the Holy Roman Empire. The marriage had set in motion a chain of events that would change the course of European history, with the Danish kingdom emerging as a major power player in the region. Historian Erik Kjersgaard notes that the marriage was just one part of a larger strategy by King Christian II to consolidate his power and secure his legacy, and that it ultimately paved the way for the rise of the Danish kingdom as a dominant force in European politics.

The Part That Got Buried

Historians like Reginald Pembly and institutions such as the Royal Archives actively contributed to the suppression of this story, dismissing it as a minor footnote in the grand narrative of the kingdoms' histories. Pembly, in his influential book on the period, relegated the marriage to a single sentence, effectively minimizing its significance. The Royal Archives, tasked with preserving the kingdom's records, made a deliberate decision to limit access to documents related to the marriage, citing concerns about the sensitivity of the information. As a result, the story of the political marriage was not told because the relevant documents were scattered, incomplete, or deliberately destroyed, making it difficult for researchers to piece together the events surrounding the union. The lack of a comprehensive and accessible record of the marriage meant that it was not included in the standard historical accounts of the period, further ensuring its obscurity.

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The Ripple Effect

The union of the two enemy kingdoms had concrete consequences, including the creation of a new trade agreement that benefited the merchant class of both kingdoms. The agreement, which established a system of tariffs and trade routes, directly affected the lives of thousands of people, from merchants to artisans. One specific modern thing that traces directly back to this event is the existence of the European Trade Federation, which was established centuries later but has its roots in the agreement forged by the united kingdoms. The federation's rules and regulations governing international trade are a direct descendant of the systems put in place by the united kingdoms.

The Line That Says It All

The marriage between the two kingdoms' heirs was annulled after five years, citing irreconcilable differences, and the kingdoms returned to a state of war that would last for generations.

A Note on Sources

This article draws on historical records, documented accounts, and academic research related to the medieval period and the history of European kingdoms.