Year 1451 (MCDLI) was a common year starting on Friday (link will display the full calendar) of the Julian calendar.
February 3 – Murad II, Sultan of the Ottoman Empire, dies and is succeeded by his son Mehmed II.
February 14 – Louis XI of France marries Charlotte of Savoy.
April 11 – Celje acquires market town status and town rights by orders from Count Frederic II of Celje.
April 19 – In the Delhi Sultanate, the Afghan Lodi dynasty succeeds the Turkish Sayyid dynasty.
June 30 – French troops under the Comte de Dunois invade Guyenne and capture Bordeaux.
August 20 – The French capture Bayonne, the last English stronghold in Guyenne.
October 28 – Revolt of Ghent: Ghent takes up arms against Philip the Good, Duke of Burgundy.
The University of Glasgow is founded.
Nicholas of Cusa invents concave lens spectacles to treat myopia.
January 14 – Franchinus Gaffurius, Italian composer (d. 1522)
January 29 – John, Prince of Portugal, Prince of Portugal (d. 1451)
February 17 – Raffaello Maffei, Italian theologian (d. 1522)
March 5 – William Herbert, 2nd Earl of Pembroke, English Earl (d. 1491)
April 22 – Queen Isabella I of Castile, Aragonese queen consort (d. 1504)
May 2 – René II, Duke of Lorraine (d. 1508)
May 17 – Engelbert II of Nassau, Count of Nassau-Vianden and Lord of Breda (1475–1504) (d. 1504)
June 1 – Giles Daubeney, 1st Baron Daubeney (d. 1508)
July 10 – James III of Scotland (d. 1488)
September 5 – Isabel Neville, Duchess of Clarence, elder daughter of Richard Neville (d. 1476)
November 29 – Elisabeth of Brandenburg, Duchess of Württemberg (d. 1524)
May 9 – Amerigo Vespucci, Italian explorer (d. 1512)
date unknown – Christopher Columbus, Italian explorer (d. 1506)
February 3 – Murad II, Ottoman Sultan (b. 1404)
June – ‘Abdullah, Timurid Empire ruler
July 11 – Barbara of Cilli, Slovenian noblewoman
November 7 – Count Amadeus VIII of Savoy (b. 1383)
date unknown
Stefan Lochner, painter (b. 1400)
John Lydgate, English monk and poet (b. 1370)
al-Mustakfi II, Abbasid Caliph
1451 Wikipedia (Text) CC BY-SA