38 - Drusilla, Caligula's sister who died in June, with who…

38 - Drusilla, Caligula's sister who died in June, with whom the emperor is said to have an incestuous relationship, is deified. | 1122 - Pope Callixtus II and Holy Roman Emperor Henry V agree to the Concordat of Worms to put an end to the Investiture Controversy. | 1338 - The Battle of Arnemuiden, in which a French force defeats the English, is the first naval battle of the Hundred Years' War and the first naval battle in which gunpowder artillery is used. | 1409 - The Battle of Kherlen is the second significant victory over Ming dynasty China by the Mongols since 1368. | 1459 - The Battle of Blore Heath, the first major battle of the English Wars of the Roses, is won by the Yorkists. | 1561 - King Philip II of Spain issues cedula, ordering a halt to colonizing efforts in Florida. | 1779 - American Revolution: John Paul Jones, naval commander of the United States, on board the USS Bonhomme Richard, wins the Battle of Flamborough Head. |/