1345 CE

It was a year in the 14th century, in the midst of a period in human history often referred to as the Late Middle Ages.

Geopolitics & Diplomacy

September – Holland, Hainaut and Zeeland are inherited by Louis IV, Holy Roman Emperor, and remain part of the imperial crown domain until 1347.source

January 17 – The Turks attack Smyrna.source
April 22 – Battle of Gamenario: The Lombards defeat the Angevins in the northwest region of present-day Italy, just southeast of Turin.source
April – Edward III of England offers "defiance" of Philip VI of France.source
July 7 – Battle of Peritheorion: the forces of Momchil, autonomous ruler of the Rhodope, are defeated by the Turkish allies of John VI Kantakouzenos.source
August – Gascon campaign of 1345 - Battle of Bergerac, Gascony: English troops are victorious over the French.source
September 18 – Andrew, Duke of Calabria, is assassinated in Naples (d. in Aversa).source
September 26 – Battle of Warns: The Frisians defeat the forces of Holland under William II, Count of Hainaut, in the midst of the Friso-Hollandic Wars.source
October 21 – Battle of Auberoche in Gascony: The English defeat the French.source
November 8 – The English take La Réole in Gascony.source
December – The English take Aiguillon in Gascony.source

May – The Turks, led by Umur Beg, sail from Asia Minor to the Balkan Peninsula, and raid Bulgarian territory.source

March 4 – Guy de Chauliac observes the planets Saturn, Jupiter, and Mars conjoined in the sky, under the sign of Aquarius, and a solar eclipse on the same day. This sign is interpreted as foreboding by many, and Chauliac will later blame it for the Black Plague.source

March 15 – The Miracle of the Host occurs (as commemorated in Amsterdam).source
"Summer" (undated) – Louis IV's son, Louis VI the Roman, marries Cunigunde, a Lithuanian princess.source

January 8 – Kadi Burhan al-Din, poet, qadi, and ruler of Sivas (d. 1398)source
March 25 or 1347 – Blanche of Lancaster, wife of John of Gaunt, 1st Duke of Lancaster (d. 1369)source
October 31 – King Fernando I of Portugal (d. 1383)source
December 7 – Thado Minbya, founder of the Kingdom of Ava (d. 1367)source
Eleanor Maltravers, English noblewoman (d. 1405)source
King Charles III of Naples, reign 1381–1386 (d. 1386)source
Helen of Bosnia, queen regnant (d. 1399)source
John of Nepomuk, Bohemian monk and saint (k. 1393)source

January 17 – Martino Zaccaria, former Genoese Lord of Chios (killed by Turks at Smyrna)source
January 17 – Henry of Asti, titular Latin Patriarch of Constantinople (killed by Turks at Smyrna)source
April 14 – Richard Aungerville (also known as Richard De Bury), English writer and bishop (b. 1287)source
June 11 – Alexios Apokaukos, chief minister of the Byzantine Empire (lynched by political prisoners)source
July 7 – Momchil, semi-independent brigand ruler in the Rhodope Mountains (killed in battle)source
July 24 – Jacob van Artevelde, Flemish statesman (b. 1290) (killed by mob)source
July 28 – Sancia of Majorca, queen regent of Naples (b. c. 1285)source
September 18 – Andrew, Duke of Calabria, king consort of Naples (b. 1327) (murdered)source
September 22 – Henry, 3rd Earl of Lancaster, English politician (b. 1281)source
September 26 – William II, Count of Hainaut (killed in the Battle of Warns)source
November 13 – Constance of Peñafiel, queen consort of Pedro I of Portugal (b. 1323)source
Aedh mac Tairdelbach Ó Conchobair, Irish King of Connachtsource
John Vatatzes, Byzantine general (murdered)source
John Apokaukos, governor of Thessalonica (executed)source