1478

Events 
 February 18 – George, Duke of Clarence, convicted of treason against his older brother Edward IV of England, is privately executed in the Tower of London.
 April 26 – The Pazzi attack Lorenzo de' Medici and kill his brother Giuliano during High Mass in the Florence Cathedral.
 December 28 – Battle of Giornico – Swiss troops defeat the Milanese.
 Lorenzo de' Medici becomes sole ruler of Florence
 Grand Prince Ivan III of Moscow conquers Novgorod
 Vladislav II of Bohemia makes peace with Hungary
 Eskender succeeds his father Baeda Maryam as Emperor of Ethiopia at the age of six.