History of The North Podcast Episode Audio Theme

Mikael Shainkman

Picture a young, ambitious king standing in a drafty hall in August 1335. He is twenty-nine years old, he wears two crowns, and he has just made a mistake that will cost him his life. This is Magnus Eriksson, King of both Sweden and Norway. And on this particular day, he and his advisors proclaim a new, unified Swedish Law of the Land. Now, on paper, this looks like brilliant, modern statecraft. Sweden in 1335 is not a neat, centralized map. It is a messy patchwork of fiercely independent provinces, including the newly acquired, incredibly wealthy region of Scania. Each of these regions has its own ancient laws, its own customs, its own political habits. So, Magnus thinks, "Let us harmonize this." He brings in European Roman law. And of course, the Archbishop of Uppsala, the Swedish Church, the wealthy urban merchants, they all applaud. Why? Because legal uniformity means predictable courts, stable trade, and cleaner administration. It makes the kingdom look like a real, sophisticated European monarchy. But Magnus forgot the golden rule of medieval politics: law is not just a set of rules. Law is power. To the Swedish provincial nobility and the stubborn peasant estates, this new law was not progress. It was a direct, existential threat to their traditional local autonomy, their regional assemblies, and their power to negotiate with the crown on their own terms. By trying to build a modern monument of administrative cohesion, Magnus did not strengthen his grip. Instead, he did something incredibly hamfisted. He handed his political opponents a beautifully drafted, legally sound reason to rise up in armed rebellion. Or did they?

Mikael Shainkman

The reaction was almost immediate. In September 1335, only a month after the proclamation, a provincial assembly—the thing in Uppland—declares open rebellion. Now, a thing is not a modern parliament, but it is not a chaotic mob either. It is a legal-political assembly where local elites speak the language of law, and right now, they are using that language to reject the king. Their leader is Jon Tomasson Grip, a man who knows exactly how to exploit noble panic. The rebellion spreads like wildfire. Stockholm is quickly besieged, and Magnus has to flee. He, his court, his Walloon wife Blanche of Namur, and her foreign knights are forced to scramble onto ships to escape. And let us be honest, the presence of those Walloon knights did not help Magnus's case. To a Swedish nobility already terrified of royal centralization, a court packed with foreign-speaking soldiers looked like a power bloc designed to freeze them out. Meanwhile, Jon Tomasson Grip marches his rebel army straight toward Uppsala. He wants the Archbishop, Peter Filipsson. In medieval politics, if you get the Archbishop, you do not just get a churchman; you get legitimacy, administrative literacy, and a massive moral shield. But Archbishop Peter panics. He does not stay to negotiate. He gathers the immense wealth of the Uppsala cathedral chapter and flees across the Mälaren into the dense forests of Värmland, and finally over the border into Norway. The rebellion had frightened the Church so badly that they chose exile over compromise. Magnus himself lands in Tønsberg late in September, utterly humiliated, and immediately calls for a meeting of the Norwegian Council of the Realm. This is where he meets the real power brokers of Norway. Men like Erling Vidkunsson of Bjarkøy, and Magnus's own first cousins, the Sudreim brothers, Jon and Sigurd Havtoresson. Now, the Sudreim brothers are not just ambitious nobles. Their mother, Agnes, and Magnus's mother, Ingeborg, were both daughters of the late King Håkon V. They have royal blood in their veins. Magnus begs them for military aid to crush the Swedish rebels. The Norwegians, being pragmatists, agree to help. But, as usual, loyalty in the Middle Ages is rarely free. They do not save their king out of pure cousinly love. They demand heavy guarantees. They want privileges for the Norwegian nobility, and they want ironclad promises that Norwegian men will get lucrative administrative offices in Sweden once the rebellion is crushed. They are saving their king, yes, but they are absolutely billing him in advance.

Mikael Shainkman

By the spring of 1336, the Norwegian army is ready. A force of 4,000 men—consisting of local peasant levies, the leidang, and elite, heavily armored noble cavalry—marches from Bohuslän into Westrogothia. Outside the town of Skara, on a wide, wind-swept heath, they meet 3,000 Swedish rebels under the command of Jon Tomasson Grip. The battle begins, and at first, the Norwegian strategy works beautifully. The sheer shock power of the Norwegian mounted knights, the elite cavalry, begins to tear through the rebel lines. You can almost feel the momentum shifting. The Swedes are buckling under the weight of the horses. And then, in a single, terrifying instant, the entire political landscape of Scandinavia is completely rewritten. A stray crossbow bolt, hissed from the Swedish lines, strikes King Magnus Eriksson directly in the eye. He dies instantly. Just like that, the man who personally bound Sweden and Norway together is gone. The personal union is lying dead in the mud. To make matters worse, almost simultaneously, the veteran Norwegian commander, Erling Vidkunsson, is severely wounded and taken out of the fight. The Norwegian army, suddenly leaderless, begins to waver. In medieval warfare, when the king falls, you do not look at the chain of command. You look around and you wonder if God has abandoned you. Panic starts to ripple through the lines. The victory they had in their grasp is about to turn into a catastrophic rout.

Mikael Shainkman

But before the panic can destroy the army, Jon Havtoresson Sudreim steps into the vacuum. He takes command of the wavering Norwegian cavalry, rallies the retreating knights, and delivers a brutal, desperate final charge straight into the Swedish line. It is a moment of pure political and military instinct. The Swedish line, exhausted and expecting a Norwegian retreat, is caught completely off guard. Their formation shatters, and the rebels flee into the woods. The Battle of Skara Heath is, technically, a Norwegian victory. But oh, what a bitter, complicated victory it is. They won the field, but they lost the king. In May 1336, Jon Havtoresson sits down with the defeated Swedish Council of the Realm at Skara to negotiate the peace. He is hard as iron. He knows the Swedes are broken, but he also knows the union is dead. So he decides to make Sweden pay, quite literally. Under the treaty of Skara, Norway takes control of Lödöse—or Laudos, as it is called in the Norwegian documents—along with the entire mouth of the Göta River. This was Sweden's only western breathing hole, its sole route to the North Sea and western trade. The Swedes could only buy it back for the astronomical sum of 15,000 marks of silver. Jon Tomasson Grip's rebellion was crushed, but the personal union between the two kingdoms was utterly shattered. Magnus Eriksson had tried to unite Sweden under a single law, only to end up with a crossbow bolt in his eye, leaving his cousin Jon Havtoresson holding all the cards in a newly unstable, deeply fractured Scandinavia. It is exactly the kind of victory medieval politics specializes in: technically successful, legally confusing, and absolutely guaranteed to create the next crisis.