Events

• January 8 - Pope Nicholas V publishes Romanus Pontifex, an encyclical addressed to King Alfonso of Portugal, which sanctions the conquest of non-Christian lands, and the reduction of native non-Christian populations to 'perpetual slavery'.
• February 23 - The Gutenberg Bible is first printed.
• Wars of the Roses begins.
• May 22 - First Battle of St Albans: Richard, Duke of York, defeats and captures King Henry VI of England.

Year in topics

• 1455 in art

Births

• February 2 - King John of Denmark, Norway, and Sweden (died 1513)
• March 3 - King John II of Portugal (died 1495)
• March 15 - Pietro Accolti, Italian Catholic cardinal (died 1532)
• Johann Cicero, Elector of Brandenburg (died 1499)
• Peter Vischer the Elder, German sculptor (died 1529)

Deaths

• March 24 - Pope Nicholas V (born 1397)
• May 22 - Henry Percy, 2nd Earl of Northumberland, English politician (killed in battle)
• May 22 - Edmund Beaufort, 2nd Duke of Somerset, English commander (killed in battle) (born 1406)
• September 3 - Alonso Tostado, Spanish Catholic bishop
• October 22 - Johannes Brassart, Flemish composer
• December 1 - Lorenzo Ghiberti, Italian sculptor and metal smith (born 1378)
• Fra Angelico, Italian painter (born 1395)
• Zbigniew Cardinal Oleśnicki, Polish bishop and statesman (born 1389)
• Humphrey Stafford, Earl of Stafford

1455

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