On This Day: June 18th

Charles VII's army defeats an English army under John Talbot at the Battle of Patay during the Hundred Years' War. The English lost 2,200 men, over half their army, crippling their efforts during this segment of the war.

Tokhtamysh-Timur war: Battle of the Kondurcha River: Timur defeats Tokhtamysh of the Golden Horde in present-day southeast Russia.

A draft Byzantine-Venetian treaty is concluded between Venetian envoys and Emperor Michael VIII Palaiologos, but is not ratified by Doge Reniero Zeno.

The Parliament of Ireland meets at Castledermot in County Kildare, the first definitively known meeting of this Irish legislature.

The treaty of Benevento between pope Adrian IV and William I of Sicily is concluded.

Pope Adrian IV crowns Frederick Barbarossa as Holy Roman Emperor.

Battle of Civitate: Three thousand Norman horsemen of Count Humphrey rout the troops of Pope Leo IX..

Byzantine-Rus' War: A fleet of about 200 Rus' vessels sails into the Bosphorus and starts pillaging the suburbs of the Byzantine capital Constantinople.

Ali becomes Caliph of the Rashidun Caliphate.

Li Yuan becomes Emperor Gaozu of Tang, initiating three centuries of Tang dynasty rule over China.