January–March •
January 4 – A truce is signed at
Breslau between King
Albert of Hungary and King
Casimir IV of Poland to end the 8-month war between the two kingdoms. •
January 9 – A
rebellion by peasants in Finland against the Swedish government, led by
Anian Daavid, is ended by the Swedish Army after intervention by the
Bishop of Turku. After confiscation of some untillable land to compensate other landowners for damages, the peasants are pardoned upon taking an oath never to rise up against the Swedish Crown again. •
January 10 –
Pope Eugene IV, who had convened the
Council of Ferrara a year earlier to fight the reforms of the
Council of Basel, orders the transfer of its participants from Ferrara to
Florence. •
January 20 – In England,
John Juyn becomes the new
Chief Justice of the King's Bench. •
January – In Vietnam, a rebellion of the barbarians in Phục Lễ province, supported by the Laotian army, against King
Lê Thái Tông under the
Lê dynasty, is defeated. •
February 17 – In the
Duchy of Cieszyn in Poland,
Duke Wenceslaus I marries
Elisabeth of Hohenzollern, the daughter of the
Elector of Brandenburg,
Friedrich. •
March 19 –
Aedh mac Tairdelbach becomes the new
King of Connacht (in modern-day
County Roscommon) in Ireland upon the death of his nephew,
Cathal mac Ruaidri Ó Conchobair, who had been King of Connacht since 1426. •
March 26 – Meeting in Germany, the Diet of Mainz, summoned by the new Holy Roman Emperor, Frederick III, to consider the case of Pope Eugene IV, votes to deprive Eugene of his authority within the Empire and to elect a new Diet to meet in Frankfurt in 1440.
April–June •
April 12 – In a battle on
Lake Garda in
Italy, a passage to the
Adriatic Sea, ships from the
Duchy of Milan defeat those of the
Republic of Venice in battle and take control of the lake. •
May 6 –
Battle of Grotnik:
Wladyslaw III's royal army defeats the
Hussite rebels, led by
Spytko III of Melsztyn, ending the non-Catholic movement in
Poland. •
May 16 – Pope Eugene, already found to be in contempt of the
Council of Basel, is declared by the Council to be a
heretic. •
June 24 –
Sigismund of Habsburg becomes the new
Duke of Austria upon the death of his father,
Frederick IV. •
June 25 – The
Council of Basel formally declares that Pope Eugene IV is deposed. •
June – The "
Miracle of the Moose" takes place, according to
Russian hagiographers.
July–September •
July 6 –
Pope Eugene IV issues the
Bull of Union with the Greeks (
Laetentur Caeli), signed by the Byzantine Emperor
John VIII Palaiologos, proclaiming the end of the
East–West Schism between Roman Catholicism and Eastern Orthodoxy and the union of the two divisions of the
Christian faith. The bull is repudiated by most Eastern bishops shortly thereafter. •
July 9 – The
Battle of Craignaught Hill takes place in
Scotland between
Clan Boyd and
Clan Stewart as the Stewarts of Darnley carry out revenge against Sir Thomas Boyd for his murder of Alan Stewart. •
July 13 – The
siege of Moscow by
Ulugh Muhammad, the monarch of the
Kazan Khanate, fails after 10 days following the defense of the Muscovite capital by
Yuri Patrikeevich. •
August 18 –
Smederevo Fortress, the seat of government of the
Despotate of Serbia, surrenders to the
Ottoman Empire after a siege of three months under the command of the Sultan
Murad II. The siege had started after the Despot,
Durad Branković, had departed to the
Republic of Venice, leaving the nation under the control of his son,
Grgur Branković. Grgur is appointed as the Ottoman Governor of the Serbian province. •
August 28 – Pope Eugene IV sends a message of unity to the Emperor of Ethiopia,
Qostantinos I, but the proposal for a union with the Ethiopian Orthodox Christian Church is not acknowledged. •
September 8 – Cardinal
Giovanni Vitelleschi captures
Foligno, ending Trinci's
signoria. •
September 20 – In the modern-day Indian state of
Rajasthan, Raja Udharan becomes the new
King of Amber upon the death of the Raja Banbir. •
September 24 -
King Erik XIII of Sweden is declared deposed in Sweden while
Karl Knutsson Bonde continues to serve as Regent of Sweden. Erik remains
King of Norway. •
September 25 – King
Henry VI of England summons the English Parliament, directing all members to assemble at
Westminster on November 12.
October–December •
October 30 – The
Council of Basel begins a conclave to elect its own successor to Pope Eugene IV, whom it had deposed on June 25. •
November 12 – In
England: •
Parliament is opened and the House of Commons elects
William Tresham as its speaker. •
Plymouth becomes the first town incorporated by Parliament. •
November 22 – Following up on the declaration of union of the Roman Catholic Church with the Greek Orthodox Church, Pope Eugene IV signs an agreement of union with the
Armenian Apostolic Church. •
December 18 –
Pope Eugene IV designates nine archbishops and six bishops to join the
College of Cardinals and one cardinal and one priest, for 17 appointments in all.
Date unknown • At the
Portuguese Cortes,
Peter, Duke of Coimbra is appointed Regent of the Kingdom. • Beginning of the settlement of the
Azores with the arrival of the first Portuguese settlers in
Santa Maria. • Earliest likely date for
Johannes Gutenberg's development of
printing with
movable type at
Mainz. == Births ==