1227

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In the year 1227, a common year starting on Friday of the Julian calendar, significant events unfolded across Europe. One notable occurrence was the Livonian Crusade, where approximately 20,000 men from the Livonian Brothers of the Sword and their Crusader allies successfully crossed the sea ice from mainland Estonia to defeat the last Estonian strongholds in the Battle of Muhu and the siege.

In Germany, Count Adolf IV of Holstein led a coalition army from the cities of Lübeck and Hamburg, defeating the Danish-German forces of King Valdemar II at the Battle of Bornhöved. This victory allowed Adolf to shake off Danish dominance and accept an overlordship role through the Archbishopric of Bremen under Erzbiskop Gerhard II von Lippe.

Meanwhile, in modern-day Netherlands, a battle took place near Ane on July 28th, where the forces of the Bishopric of Utrecht were defeated by the rebellious Drenths led by Rudolph van Coevorden. The Drents lured the bishop's forces into an ambush and killed Bishop Otto II of Lippe.

In Apulia, Emperor Frederick II mustered a German expeditionary force to aid in his campaign against Brindisi. However, he was weakened by malaria and decided to return home while leaving behind a second contingent that journeyed towards the Levant.

Frederick's health issues continued as he recovered at Pozzuoli, where he received a letter from Pope Gregory IX announcing his excommunication. The pope urged Frederick to seek treatment for the virus afflicting him.

In England, King Henry III declared himself of age in January 1227 following a council meeting in Oxford. He successfully suppressed a brief revolt by his brother Richard of Cornwall and maintained control over the government with Hubert de Burgh.

France witnessed significant power shifts as Blanka of Castile skillfully negotiated her way to success against Theobald IV of Champagne and Henry II of Bar, who had formed an opposition alliance against their son Ludwig IX. This led to Peter Mauclerc and Hugo X of Lusignan submitting to the French crown.

In Occitania, skirmishes broke out between units of Raimund VII of Toulouse's forces and royal troops under Humbert de Beaujeau in alternating battles.

The Holy Roman Empire also saw notable events. Margarete von Babenberg was crowned Roman-German Queen after her marriage to