Historical Events In June - 23
Monday, 05 January 2026
0758 Ho-tse Shen-hui, Zen teacher/disciple of Hui-neng, dies at 74 on this day in history. 

0930 On this day in history world's oldest parliament, the Iceland Parliament, established 

1018 On June - 23 henry I of Austria 

1053 Norseman Robert Guiscard gains victory at Civitate over papal forces raised by Leo IX, who is captured Robert, 38, takes Benevento from the Byzantines and founds the Norman Empire that will rule southern Italy until 1194 on this day in history. 

1075 On June - 23 theoduinus, Beiers prince-bishop of Liege, dies 

1137 Adalbert I, archbishop of Mainz (1111-1137), dies on June - 23. 

1139 On this day in history andries van Kuik, bishop of Utrecht, dies 

1160 On June - 23 johannes de Matha, French saint/founder (Trinitarians) 

1295 On June - 23 pope Boniface VIII enters Rome 

1298 Duke Albrecht von Habsburg chosen Roman Catholic German king on June - 23. 

1305 On this day in history french-Flemish peace treaty signed at Athis-sur-Orge 

1444 Marcus, [Manuel] Eugenicus, Byzantine bishop of Efeze/theologist, dies on this day in history. 

1532 On June - 23 henry VIII & Francois I signs secret treaty against emperor Karel V 

1540 Johann Baptista Serranus, composer on June - 23. 

1565 Turgut Reis (Dragut), commander of the Ottoman Navy, dies during the Siege of Malta on June - 23. 

1585 On June - 23 spanish army under Tassis beats Amerongen Staatse troops 

1611 On June - 23 henry Hudson set adrift in Hudson Bay by mutineers on his ship Discovery & never seen again 

1612 Justus G Schottel, [Schottelius], German poet on June - 23. 

1658 Dutch troops occupy last Portugese Fort Jafnapatnam Ceylon on this day in history. 

1661 On this day in history marriage contract for Charles II of England & Catharina of Portugal 

1683 On June - 23 william Penn signs friendship treaty with Lenni Lenape indians in Pennsylvania; only treaty "not sworn to, nor broken" 

1686 On this day in history william Coventry, English statesman 

1707 On June - 23 john Mill, English theologian 

1713 The French residents of Acadia are given one year to declare allegiance to Britain or leave Nova Scotia, Canada on this day in history. 

1724 On this day in history russia & Turkey sign Treaty of Constantinople 

1749 Konrad Back, composer on this day in history. 

1757 Robert Clive defeats Indians at Plassey, wins control of Bengal on June - 23. 

1758 Seven Years' War: Battle of Krefeld on June - 23. 

1760 On June - 23 battle of Landshut, Silesia 

1760 On this day in history battle of Landshut Silesia: Austria beats Prussia 

1763 The birth of Josephine de Beauharnais, Wife of Napoleon on June - 23. 

1763 On this day in history josephine Martiniques, empress of France (1804-14) 

1771 On this day in history jean-Claude Trial, composer, dies at 38 

1774 Matthijs Siegenbeek, Dutch linguist (spelling) on June - 23. 

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