Year 1443 (MCDXLIII) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar.
July 22 – Battle of St. Jakob an der Sihl (Old Zürich War): The forces of the city of Zürich are defeated but the Swiss Confederacy have insufficient strength to besiege and take the city.
November 8 – Battle of Niš: John Hunyadi and the army of the Crusade of Varna defeat three armies of the Ottoman Empire and capture the city of Niš in modern-day Serbia; Skanderbeg deserts the Ottoman camp and goes to Albania.
November 28 – Skanderbeg and his forces, rebelling against the Ottoman Empire, liberate Krujë, in Middle Albania, and raise the Albanian flag.
Portuguese explorer Nuno Tristão penetrates the Arguin Gulf off the west coast of Africa.
King Sejong the Great establishes Hangul as the native alphabet of the Korean language.
Vlad II Dracul begins his second term as ruler of Wallachia, succeeding Basarab II.
The Buddhist Zhihua Temple (智化寺) is built in Beijing at the order of Wang Zhen, chief eunuch at the court of the Zhengtong Emperor of Ming dynasty China.
January 27 – Albert III, Duke of Saxony (d. 1500)
February 2 – Elisabeth of Bavaria, Electress of Saxony (d. 1486)
February 12 – Giovanni II Bentivoglio, Italian noble (d. 1508)
February 23 – Matthias Corvinus, of Hungary (d. 1490)
February – Anne de Beauchamp, 15th Countess of Warwick (d. 1449)
May 17 – Edmund, Earl of Rutland, brother of Kings Edward IV of England and Richard III of England (d. 1460)
May 29 – Victor, Duke of Münsterberg, Reichsgraf, Duke of Münsterberg and Opava, Count of Glatz (d. 1500)
May 31 or 1441 – Margaret Beaufort, Countess of Richmond and Derby, mother of King Henry VII, grandmother of King Henry VIII of England (d. 1509)
June 29 – Anthony Browne, English knight (d. 1506)
September 9 – Muhammad Jaunpuri (d. 1505)
November 10 – Adolf III of Nassau-Wiesbaden-Idstein, Germany noble (d. 1511)
December 1 – Magdalena of France, French princess (d. 1495)
December 5 – Pope Julius II (d. 1513)
probable
Piero del Pollaiolo, Italian painter (d. 1496)
Ygo Gales Galama, Frisian warlord and freedom fighting rebel (d. 1492)
January 16 – Erasmo of Narni, Italian mercenary (b. 1370)
January 28 – Robert le Maçon, Chancellor of France
February – Guidantonio da Montefeltro, count of Urbino (b. 1377)
March 24 – James Douglas, 7th Earl of Douglas (b. 1371)
April 12 – Henry Chichele, Archbishop of Canterbury
May 9 – Niccolò Albergati, Italian Cardinal and diplomat (b. 1373)
June 5 – Ferdinand the Holy Prince of Portugal (b. 1402)
August 16 – Ashikaga Yoshikatsu, Japanese shogun (b. 1434)
September 18 – Lewis of Luxembourg, Archbishop of Rouen
date unknown – Infante Diogo, Constable of Portugal
probable – Zeami Motokiyo, Japanese actor and playwright (b. 1363)
1443 Wikipedia (Text) CC BY-SA