Year 1434 was a common year starting on Friday (link will display the full calendar) of the Julian calendar.

For the controversial book by Gavin Menzies, see: 1434: The Year a Magnificent Chinese Fleet Sailed to Italy and Ignited the Renaissance.

Events of 1434

• April 14 - The foundation stone of Cathedral St. Peter and St. Paul in Nantes, France is laid.
• May 30 - Hussite Wars - Battle of Lipany: The Catholics and Ultraquists defeat the Taborites, ending the Hussite Wars.
• Jan van Eyck paints The Wedding of Giovanni Arnolfini and Giovanna Cenami.
• Explorer Gil Eanes reaches Cape Bojador in Western Sahara. In the same year, Portuguese traders deliver their first cargo of African slaves to Lisbon.
• Zara Yaqob becomes Emperor of Ethiopia.
• In Ming Dynasty China, a long episode of drought, flood, locust infestation, and famine cripple agriculture and commerce in areas throughout China, a bad spell that will last until 1448.
• Cosimo de' Medici returns to Florence one year, to the day, following his exile the previous September by the Alberti and Strozzi faction.

Ongoing

• Council of Florence (1431-1445)

Births

• March 19 - Ashikaga Yoshikatsu, Japanese shogun (d. 1443)
• September 23 - Yolande of Valois, Duchess of Savoy (d. 1478)
  • probable
  • Matteo Maria Boiardo, Italian poet (approximate date; d. 1494)
  • Kano Masanobu, Japanese painter (d. 1530)
• September 18 - Eleanor of Portugal, Holy Roman Empress (d. September 3, 1467)

Deaths

• 30 May
  • Prokop the Great, Hussite general (b. 1380)
  • Yuri IV, Russian grand prince (b. 1374)
• June 11 - King Wladislaus II of Poland
• June 19 - Alexandra of Lithuania, Duchess of Masovia
• November 12 - King Louis III of Naples (b. 1403)
• date unknown
  • John I, Duke of Bourbon (b. 1381)
  • Amda Iyasus, Emperor of Ethiopia

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