Historical Events In September - 23
Thursday, 18 September 2025
0079 Pope Linus on this day in history.
0775 On this day in history constantine V Copronymus, Emperor of Byzantium (720-75), dies
0918 On this day in history the German king Conrad I dies after a 7-year reign in which he has warred with the Danes, the Slavs, the Magyars, and the duke of Saxony
0918 Koenraad I, German duke/king (911-18), dies at 42 on this day in history.
0951 On September - 23 otto I the Great becomes king of Italy
0965 Aboe a-Taia-H al-Moetanabbi, Arabic royal poet (Diwan), murdered on this day in history.
1122 On September - 23 the Holy Roman Emperor Henry V renounces the right of investiture with ring and crozier in the September 23 Concordat of Worms, recognizes freedom of election of the clergy, and promises to restore all church property
1122 Concord of Worms on this day in history.
1408 Battle of Othee on September - 23.
1459 Battle of Blore Heath, the first major battle of the English Wars of the Roses, is fought at Blore Heath in Staffordshire on this day in history.
1513 On September - 23 king Henry III & Emperor Maximilian conquer Doornik
1541 On September - 23 philippus A Paracelsus, Swiss physician/alchemist, dies at 47
1555 On this day in history louise de Coligny, French 4th wife of Willem of Orange
1561 On September - 23 king Philip II of Spain forbids Spanish settlements in Florida
1591 On this day in history michael Lohr, composer
1596 On September - 23 joan Blaeu, cartographer/publisher
1605 On September - 23 daniel von Czepko, German poet
1605 Pontus de Tyard, French poet on September - 23.
1624 Willem Pietersz Buytewech, painter/etcher, dies at about 32 on this day in history.
1641 Adrian "Aart" van Wijck, theologist (against jansenisme) on September - 23.
1642 On September - 23 harvard College in Cambridge, Mass, 1st commencement
1642 Giovanni Maria Bononcini, composer on this day in history.
1666 On September - 23 princess Maria of Orange-Nassau marries Mauritius earl of Simmeren
1684 Johann Theodor Romhild, composer on September - 23.
1694 Francesco Passarini, composer, dies at 57 on September - 23.
1700 Nicolaus Adam Strungk, composer, dies at 59 on September - 23.
1703 Jean-Marie Leclair, composer on September - 23.
1712 Ferdinand VI, the wise, King of Spain (1746-59) on this day in history.
1719 Liechtenstein declares independence from German empire on September - 23.
1738 On this day in history hermannus Boerhaave, medical/botanist, dies at 69
1739 Russia & Turkey sign Peace of Belgrade on September - 23.
1745 On September - 23 john Sevier, Tennessee, indian fighter (Gov/Rep-Tn)
1746 On this day in history jacob Gilles appointed Dutch pension advisor
1768 On this day in history william Wallace, Scottish mathematician (Rights of Wallace)