📅 Today in HistoryApril 23

A temple is built on the Capitoline Hill dedicated to Venus Erycina to commemorate the Roman defeat at Lake Trasimene.

Maya king Uneh Chan of Calakmul attacks rival city-state Palenque in southern Mexico, defeating queen Yohl Ik'nal and sacking the city.

Dagobert III succeeds his father King Childebert III as King of the Franks.

Battle of Clontarf: High King of Ireland Brian Boru defeats Viking invaders, but is killed in battle.

Edmund Ironside succeeds his father Æthelred the Unready as King of England.

St. George's Night Uprising commences in the Duchy of Estonia.

The founding of the Order of the Garter by King Edward III is announced on St. George's Day.

Portuguese explorer Pedro Alvarez Cabral reaches new coastline (Brazil).

The Munich Reinheitsgebot (regarding the ingredients of beer) takes effect in all of Bavaria.

Battle of Villalar: King Charles I of Spain defeats the Comuneros.