Historical Events In September - 23
Sunday, 15 February 2026
0079 Pope Linus. 

0775 Constantine V Copronymus, Emperor of Byzantium (720-75), dies 

0918 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. 

0951 Otto I the Great is recorded as becoming king of Italy. 

0965 Aboe a-Taia-H al-Moetanabbi, Arabic royal poet (Diwan), murdered 

1122 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. 

1408 Battle of Othee 

1459 Battle of Blore Heath, the inaugural major battle of the English Wars of the Roses, is fought at Blore Heath in Staffordshire. 

1513 King Henry III and Emperor Maximilian conquer Doornik 

1541 Philippus A Paracelsus, Swiss physician/alchemist, dies at 47. 

1555 Louise de Coligny, French 4th wife of Willem of Orange. 

1561 King Philip II of Spain forbids Spanish settlements in Florida 

1591 Michael Lohr, composer. 

1596 Joan Blaeu, cartographer/publisher. 

1605 Daniel von Czepko, German poet. 

1605 Pontus de Tyard, French poet. 

1624 Willem Pietersz Buytewech, painter/etcher, dies at about 32. 

1641 Adrian "Aart" van Wijck, theologist (against jansenisme). 

1642 Harvard College in Cambridge, Mass, 1st commencement 

1642 Giovanni Maria Bononcini, composer 

1666 Princess Maria of Orange-Nassau marries Mauritius earl of Simmeren 

1684 Johann Theodor Romhild, composer 

1694 Francesco Passarini, composer, dies at 57 

1700 Nicolaus Adam Strungk, composer, dies at 59 

1703 Jean-Marie Leclair, composer. 

1712 Ferdinand VI, the wise, King of Spain (1746-59) 

1719 Liechtenstein declares independence from German empire. 

1738 Hermannus Boerhaave, medical/botanist, dies at 69 

1739 Russia and Turkey sign Peace of Belgrade 

1745 John Sevier, Tennessee, indian fighter (Gov/Rep-Tn) 

1746 Jacob Gilles appointed Dutch pension advisor 

1768 William Wallace, Scottish mathematician (Rights of Wallace). 

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