Pope Boniface VIII is captured by agents of King Philip IV of France, on September 7, 1303 leading to a conflict between the papacy and the French monarchy.
Browse Historical Events by Month:
What Happened in September?
Battles, deaths, and monumental religious moments. Explore significant events from September that helped shape the world. Dates for earlier events may be approximate.
Note: Sources for the historical content shown, include research and reviews of relevant Online History Resources or printed material. When possible, we show a link to a source which provides additional or unique perspective about the event.
We do our best to provide accurate information but would appreciate being notified if any incorrect information is found. You may do so by using our Feedback link.
The Battle of Bannockburn takes place during the First War of Scottish Independence, resulting in a decisive victory for the Kingdom of Scotland against the Kingdom of England.
The Battle of Mühldorf occurs between the Duchy of Bavaria and the Archduchy of Austria. The Bavarians were led by German King Louis of Wittelsbach, while the Austrians were under the command of his cousin, Anti-king Frederick of Habsburg. The Bavarian forces, loyal to Emperor Louis IV defeat the Habsburgs, securing Louis' position as Holy Roman Emperor.
Isabella of France and Roger Mortimer invade England with a mercenary army, on September 24, 1326, landing in Suffolk to overthrow King Edward II. The invasion had a high degree of support, leading to the capture of Edward II. His forced abdication took place on January 21, 1327. His son Edward III was crowned King of England in Westminster Abbey at age 14 on February 1, 1327.
Edward Balliol, supported by Edward III from England, is crowned King of Scotland in Scone in the second war of Scottish Independent. His reign was short-lived and he was forced to flee Scotland less than three months later.
The English fleet, commanded in person by King Edward III almost completely destroyed the French fleet near the coast of Holland on September 23, 1338 at the Battle of Arnemuiden at the start of the Hundred Years' War.
The Battle of Sluys takes place during the Hundred Years' War, with the English fleet under King Edward III achieving a major victory over the French fleet. Historical - Timeline
King Edward III of England forces, surrounds the city of Calais on September 4, 1346, immediately after the Battle of Crécy, beginning the Siege of Calais during the Hundred Years' War. The siege lasted over a year and ended with a pivotal English victory
Calais was a crucial port, just miles from Dover, allowing England to launch reinforcements and supplies directly into France. The town was defended by a French garrison led by Jean de Vienne, who resisted until extreme shortages forced their surrender. The capture of Calais established over two centuries of English rule in the town gaining a critical stronghold on the continent. Historical - Timeline
The Battle of Blanchetaque is fought during the Crécy campaign of the Hundred Years' War, where the English army successfully crosses the River Somme to engage the French forces.
King John II of France, was captured by the English forces commanded by the Black Prince, on September 19, 1356, during the Battle of Poitiers, during the Hundred Years' War. It was a major setback for the French, leading to the Treaty of Brétigny. Historical Timeline
Clement VII is elected on September 20, 1378 as a rival pope in Avignon by a majority of the cardinals seceding from Rome. The events leading to the Western Schism began after Pope Gregory XI's death in March 1378, with the election of Urban VI on April 8, 1378,
The creation of two competing papal claimants divided the Catholic Church. The schism was finally resolved 40 years later at the Council of Constance in 1417-1418 , which led to the election of a single pope, Martin V.
The Battle of Kulikovo takes place on September 8, 1380, where the forces of Grand Prince Dmitry of Moscow defeated the Mongol army. The victory did not end Mongol domination over Russia but it is traditionally regarded as the turning point at which Mongol-Tatar influence began to wane and Moscow's power began to rise.
King Charles VI of France ordered that all Jewish people be expelled from the kingdom. More
The Crusade against the Ottoman Empire, led by the government of King Charles VI of France, comes to an abrupt end with the catastrophic defeat at the Battle of Nicopolis on September 25, 1396.
The Battle of Nicopolis in Bulgaria takes place during the Crusade of Nicopolis, where the Ottoman Empire, led by Bayezid I, decisively defeats the combined European forces led by King Sigismund of Hungary. The defeat lead the way to the end of the Second Bulgarian Empire, securing Turkish control over the region and the expansion of the Ottoman empire into the Balkans.
King Richard II of England is persuaded to sign a formal abdication document relinquishing the throne to Henry Bolingbroke. Next day, on September 30, his abdication was announced and approved by Parliament, and Henry was proclaimed king. as Henry IV
Rebellion in Wales led by Owain Glyndŵr against English rule begins with a surprise attack on September 16, 1400, on the English-held town of Ruthin and other English-held sites in North East Wales.
The Welsh rebel leader, Owain Glyndŵr, proclaims himself Prince of Wales, initiating a revolt against English rule. This declaration at his manor of Sycharth ignited a 15-year uprising where Glyndŵr's forces engaged in guerrilla warfare, attacking English towns and capturing English-held castles, leading to a unified vision of an independent Wales.
Rebellion of Owain Glyndŵr: Welsh forces under Owain Glyndŵr revolt against English rule in Wales on September 16, 1400.
Welsh nobleman Owain Glyndŵr was proclaimed Prince of Wales by his followers on September 16, 1400, starting a 15-year rebellion against King Henry IV. Sparked by a land dispute and dissatisfaction with English rule. The uprising aimed for an independent Wales, quickly gained support across the region.