May 4 is the 124th day of the year (125th in leap years). There are 241 days remaining until the end of the year.
- 1008: King Henri I of France
- 1913: Katherine of Greece
- 1948: King George Tupou V of Tonga
- 1994: Pauline Ducruet
- 2009: Prince Henrik of Denmark
- 1471: Edward, Prince of Wales
- 1616: Magdelena of Brandenburg
- 1884: Maria Anna of Savoy
- 1897: Sophie Charlotte of Bavaria
- 1471: Yorkists defeat Lancastrians at the battle of Tewkesberry.
- 1534: Wedding of Francesco II Sforza, Duke of Milan and Christina of Denmark.
- 1874: Wedding of Duke Eugen of Württemberg and Grand Duchess Vera Constantinovna of Russia.