Major Events
- Feb 5 King Alfonso V, orders Sicily's Jews to attend conversion sermons
- Jul 3 Treaty of Delft signed between Jacqueline of Bavaria and Philip the Good of Burgundy, ending the Hook and Cod wars in the County of Holland
- Aug 7 Valais witch trial proceedings begin in Valais Canton, Switzerland, first organized witch trials
Born in 1428
- May 3 Pedro González de Mendoza, Spanish cardinal and statesman, born in Guadalajara, Spain (d. 1495)
- Sep 21 Jingtai, 7th Emperor of the Ming dynasty of China (1449-57), born in Beijing (d. 1457)
- Nov 22 Richard Neville [16th Earl of Warwick], English nobleman and military commander known as 'Warwick the Kingmaker', born in Norwich, England (d. 1471)
Fun Fact About 1428
Valais witch trial proceedings begin in Valais Canton, Switzerland, first organized witch trials
Who Died in 1428
- Jan 4 Frederick I, Elector of Saxony, 'The Warlike' (b. 1370)
- Feb 3 Ashikaga Yoshimochi, Japanese shogun (b. 1386)
- Aug 30 Emperor Shōkō, 101st Emperor of Japan (1412-1428) (b. 1401)
- Nov 3 Thomas Montacute, 4th Earl of Salisbury, English military leader (mortally wounded in battle) (b. 1388)
Famous Weddings in 1428
- Jan 9 Pope Martinus V declares Jacqueline, Countess of Haintaut's marriage to Humphrey Duke of Gloucester invalid
James I