January–March •
January 6 – Officials from the Swiss
Canton of Lucerne, arrive in the village of
Sempach, at the time under control of Austria and the Habsburg family, and offer Swiss citizenship and rights. Lucerne's representatives enter into similar pacts with other Austrian-controlled towns, including Meienberg, and bring with them soldiers from the
Swiss Confederacy. •
January 11 –
Union of Krewo: A delegation of Poland's nobles visits the
Grand Duke Jogaila of Lithuania at
Valkaviskas (now Vawkavysk in
Belarus and informs him that they will elect him as the new King of Poland on the condition that he convert from Lithuania's polytheistic religion to Christianity, and that he marry the Queen of
Jadwiga of Poland. Jogaila agrees to the terms. •
January 14 – The Austrian garrison at
Meienberg responds to the overtures from the Swiss canton of Lucerne and kills over 140 of the Swiss Confederacy troops, starting a war between the two nations. •
February 13 – The
Republic of Venice takes control of the island of
Corfu. •
February 15 – Grand Duke Jogaila of Lithuania is baptized by the Roman Catholic Bishop
Bodzanta of
Gniezno at
Wawel Cathedral,
Kraków after converting to Christianity, and takes the name Wladyslaw II. •
May 9 – King
John I of Portugal and King
Richard II of England ratify the
Treaty of Windsor. •
June 9 – Queen
Elizabeth of Hungary pledges to assist King Wladyslaw II of Poland against his enemies, the Teutonic Knights, who question the legitimacy of the King's marriage to Queen Jadigwa. •
June 26 –
Heidelberg University is opened by
Ruprecht I,
Count Palatine of the Rhine seven months after he received permission from
Pope Urban V to create a school
studium generale. Formal establishment will take place on October 19.
July–September •
July 9 – •
Battle of Sempach: Soldiers from cantons of the
Old Swiss Confederacy defeat the Austrian Habsburg Army in a battle that leads to the unification of the cantons into the nation of Switzerland. •
John of Gaunt, Duke of Lancaster and oldest surviving son of the late King
Edward II of England, departs from England with 5,000 men and a fleet of English and Portuguese ships to make good
his claim to the
throne of Castile. John, whose nephew became King Richard II upon Edward's death, claims the Castilian throne by right of his marriage to
Constanza of Castile in
1371. •
July 25 –
Elizabeth of Bosnia, mother of Queen
Jadwiga of Poland is kidnapped by Croatian rebels at
Gorjani, along with Jadwiga's sister,
Queen consort Mary of Hungary Mary, when they are ambushed by John Horvat and his men while traviling to Dakovo.
Nicholas I Garai, who had accompanied Elizabeth and Mary, is murdered and his severed head is sent by the rebels to
Margaret of Durazzo, the former Queen consort of Hungary and Naples, as proof that the murderers of her husband
King Charles III, have been captured. •
August 8 – King Richard II of England summons the members of the House of Commons and the House of Lords to assemble at
Westminster Abbey on October 1 for his 14th Parliament, dubbed by historians as the "
Wonderful Parliament". Although the King's purpose is to secure funding to defend against an imminent invasion from France, the parliament members begin plans to reform the unpopular king's government. •
August 17 –
Karl Thopia,
Prince of Albania, enters into an alliance with the
Republic of Venice. Albania agrees to participate in all wars of the Republic or to pay auxiliary funds and supply grain, as well as to protect Venetian buyers in Albania. [19] In return, Venice supplies a galley to Albania and protect Albania's coast from the Ottoman Empire. •
September 23 –
Dan I of Wallachia (modern-day southern
Romania) is killed in battle against the
Bulgarians and is succeeded by
Mircea the Elder, one of the greatest rulers of Wallachia.
October–December •
October 1 – The "
Wonderful Parliament" is opened at Westminster by King Richard's Chancellor Michael de la Pole, while King Richard declines to attend after failing to call off his decision to summon the members.
Date unknown • Abu al-Abbas is reinstated as ruler of the
Marinid dynasty in modern-day
Morocco. • Construction begins on the
Brancacci Chapel in
Florence. •
Rozhdestvensky monastery is built in
Muscovy. == Births ==