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What Happened in April?
Sieges, raids, and monumental deaths. Discover key historical events from April that influenced 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Note: Sources for the historical content shown, include research and reviews of relevant Online History Resources or printed material.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.
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Pope Gregory IX issues the papal bull "Excommunicamus" against Frederick II, Holy Roman Emperor.
Batu Khan's Mongol horde inflicts a devastating defeat on the Polish and German forces at the Battle of Liegnitz.
The Battle of Legnica takes place during the Mongol invasion of Europe, where a combined Polish-German force is defeated by the Mongols. More
King Louis IX of France was captured by Egyptian forces on April 6, 1250, after being defeated during the seventh Crusade Battle of Fariskurin in a decisive victory by the Ayyubid forces. Louis IX was ransomed and later succumbed to dysentery on August 25, 1270 during the Eighth Crusade. His son, Philip III, succeeded him.
King Louis IX of France is ransomed after being captured by the Egyptians during the Seventh Crusade.
King Louis IX of France is ransomed after being captured by the Egyptians during the Seventh Crusade.
The Mongols, led by Hulagu Khan, capture and sack Baghdad, effectively ending the Abbasid Caliphate.
The Mongol Empire, under the leadership of Hulagu Khan, captures and sacks the city of Baghdad, leading to the fall of the Abbasid Caliphate.
The Battle of Homs takes place between the Mamluks and the Mongols, leading to a decisive Mamluk victory.
The Battle of Lewes occurs during the Second Barons' War in England, resulting in the capture of King Henry III.
Kings Rudolf I of Germany and Otakar II of Bohemia sign a peace treaty.
Traditional founding date of the city of Amsterdam in the Netherlands.
Pope Nicholas III is elected as the 188th pope.
The Sicilian Vespers: A rebellion breaks out in Sicily against the rule of the Angevin King Charles I of Naples.
The Statute of Rhuddlan establishes English rule in Wales under King Edward I.
St. Louis IX of France is canonized as a saint by Pope Boniface VIII.
The death of Mongol ruler Kublai Khan is kept secret until February 5, 1294, to prevent unrest in the empire.
The English capture the town of Dunbar in Scotland on April 27, 1296 during the Second War of Scottish Independence, after the English forces under John de Warenne, Earl of Surrey, crushed King John Balliol's Scottish army, capturing the castle's the next day and beginning English occupation.
Battle of Dunbar: King Edward I of England defeats the Scots under John Balliol during the First War of Scottish Independence.