Events on 23 September 35
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Pope Callixtus II and Holy Roman Emperor Henry V agree to the Concordat of Worms to put an end to the Investiture Controversy.
Year 1338
The Battle of Arnemuiden was the first naval battle of the Hundred Years' War and the first naval battle using artillery, as the English ship Christopher had three cannons and one hand gun.
Year 1409
Battle of Kherlen, the second significant victory over Ming dynasty China by the Mongols since 1368.
Year 1459
Battle of Blore Heath, the first major battle of the English Wars of the Roses, takes place.
Year 1568
Spanish naval forces rout an English fleet, under the command of John Hawkins, at the Battle of San Juan de Ulúa near Veracruz.
Year 1641
The Merchant Royal, carrying a treasure of over 100,000 pounds of gold (worth over £1 billion today), is lost at sea off Land's End.
Year 1779
American Revolution: John Paul Jones on board the USS Bonhomme Richard wins the Battle of Flamborough Head.
Year 1780
American Revolution: British Major John André is arrested as a spy by American soldiers exposing Benedict Arnold's change of sides.
Year 1803
Second Anglo-Maratha War: Battle of Assaye between the British East India Company and the Maratha Empire in India.
Public Holidays Around The World On This Day 2
Birthdays on 23 September 230
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Deaths on 23 September 87
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