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The 1440s

584 sourced entries across 10 years, inside the 15th century. Each year below opens its own page; the lines under it are that year’s highest-ranked entries.

1440 CE53 entries

  • September 12 – Eton College, one of the most famous boarding schools for boys in England, is founded by King Henry VI as "Kynge's College of Our Ladye of Eton besyde Windesore".
  • September 13 – Breton lord Gilles de Rais is arrested at his castle at Machecoul after an accusation of murdering children is brought against him by the Bishop of Nantes.
  • October 22 – Gilles de Rais confesses and is sentenced to death on a conviction of murdering at least 140 children. He is hanged on October 26 and his corpse is then burned at the stake.

1441 CE60 entries

  • June 6 – The siege of Pontoise is started by with 5,000 troops led by King Charles VII of France and Arthur de Richemont, Duke of Brittany, to capture a 1,200 member English Army garrison located on the Île-de-France near Paris. The siege continues for three months until the garrison surrenders.
  • June - Richard, Duke of York arrives in Normandy following his appointment as English commander in the Hundred Years War
  • September 15 – The Metropolitan Isidore of Kiev is allowed by Grand Prince Vasily II to escape from imprisonment in Moscow, along with two of his disciples, Gregory the Bulgarian and Afanasy. He flees to Tver and then to Novogrudok and eventually to Rome.

1442 CE51 entries

  • March 25 – Battle of Hermannstadt: After seven days of fighting that began on March 18, John Hunyadi defeats an army of the Ottoman Empire (80,000 strong), led by Mezid Bey of Vidin, near Sibiu in what is now Romania.
  • September 2 – John Hunyadi defeats another army of the Ottoman Empire (70,000 strong), led by Hadım Şehabeddin, Beylerbey (or governor) of Rumelia, near the Ialomița River. Following this, he places Basarab II as ruler of Wallachia.
  • December 13 – King Władysław III of Poland, who had been elected as King of Hungary in 1440, and Elisabeth of Luxembourg, widow of King Albert of Hungary and mother of Ladislaus the Posthumous, whom she arranged to be crowned king, reach an agreement in the Hungaryian city of Győr, brokered by Cardinal Julian Cesarini. Elizabeth dies at the age of 33, six days after the meeting, leading to rumors that she had been poisoned by King Wladyslaw.

1443 CE59 entries

  • June 5 – The strongest earthquake on record in Poland kills at least 30 people and damages buildings in Kraków and Wrocław, and in Timișoara and Oradea in Romania.
  • November 28 – Skanderbeg and his forces, rebelling against the Ottoman Empire, liberate Krujë, in Middle Albania, and raise the Albanian flag.
  • December 30 – King Sejong the Great of Korea announces the creation of the Hunminjeongeum (literally "The Proper Sounds for the Instruction of the People") a manual for Hangul, a standardized writing system for the Korean language.

1444 CE50 entries

  • March 2 – The League of Lezhë, an alliance of Albanian principalities, is established in Lezhë; George Kastrioti Skanderbeg is proclaimed commander of the Albanian resistance.
  • 22 May - Treaty of Tours signed between England and France who agree to a five-year truce in the Hundred Years War
  • August 6 – A Portuguese fleet of caravels, led by Lançarote de Freitas, lands 235 slaves at Algarve, Portugal.

1445 CE52 entries

  • April 8 – At West Java in what is now Indonesia, the Sultanate of Cirebon establishes its capital at Dukuh Alang-alang and Ki Gedeng Alang-Alang is designated as the Sultan.
  • July 7 – The Battle of Suzdal takes place 120 mi from Moscow when Ulugh Muhammad of the Khanate of Kazan attacks Nizhny Novgorod, part of the Grand Principality of Moscow. The Grand Prince Vasily II of Moscow is captured in battle as a prisoner of war and held for ransom until the payment of 200,000 rubles is completed in November.
  • September 29 – In Normandy, Richard of York, 3rd Duke of York of England's House of Plantagenet, completes his five-year term as Lieutenant-general of British-occupied France and Edmund Beaufort, 2nd Duke of Somerset takes his place. He returns to England on October 20.

1446 CE55 entries

  • March 21 – In the Holy Roman Empire in Germany, the Electors of Cologne, Trier, Mainz, and the Palatinate, along with representatives of the Electors of Saxony and Brandenburg, assemble at Frankfurt-am-Main and create a mutual defense alliance to resist Pope Eugene IV.
  • October 9 – The hangul alphabet is proclaimed in Korea, by King Sejong the Great. The Hunmin Jeongeum, published during the year, is considered the start of this brand new scientific writing system.
  • October – Murad II, who recently became the Sultan of the Ottoman Empire after his son Mehmed II was forced by the Janissaries to abdicate, invades Attica, forcing Constantine XI to return Thebes to the duchy of Athens, and remove the tribute imposed in 1444. Murad II imposes his own tribute.

1447 CE64 entries

  • February 20 – Humphrey, Duke of Gloucester, uncle and heir apparent of King Henry VI of England, is arrested on a charge of treason. He dies from a stroke three days later while imprisoned at Bury St Edmunds in Suffolk Richard of York becomes next in line for the throne.
  • April 20 – Abdal-Latif Mirza, son of the recently-crowned Timurid Emperor Ulugh Beg, is defeated in battle at Nishapur by his cousin Ala al-Dawla Mirza, another claimant to the Timurid throne, shortly after Abdal-Latif had captured the city of Damghan and al-Dawla had conquered Mashad.
  • July 22 – In a royal wedding at the cathedral in Madrigal de las Altas Torres in the Kingdom of Castile (now in Spain) Princess Isabella of Portugal, cousin of King Afonso VI, marries King Juan II of Castile.

1448 CE72 entries

  • July 25 – The Council of Basel, opposed to the Pope at Rome, moves to Lausanne and holds its first session, presided over by the antipope Felix V.
  • September 3 – Prince George of Poděbrady, leader of the Hussites in Bohemia (now the Czech Republic) captures Prague after leading 9,000 of his troops from Kutná Hora.
  • September 15 – At the Battle of Caravaggio, the armies of the Ambrosian Republic of Milan, led by Francesco Sforza, defeat those of the Republic of Venice, commanded by Micheletto Attendolo.

1449 CE68 entries

  • January 6 – Constantine XI Palaiologos is crowned Byzantine Emperor at Mistra; he will be the last in a line of rulers that can be traced to the founding of Rome.
  • July 6 – The Ambrosian Republic of Milan defeats the armies of the Swiss canton of Uri at the Battle of Castione in what is now Switzerland.
  • September 1 – Battle of Tumu Fortress: The Oirat Mongols defeat the Ming dynasty army, and capture the Emperor Xingzong of China on September 3. The Emperor is officially deposed, while his brother Zhu Qiyu ascends as the Jingtai Emperor the next year.