📅 Today in HistoryOctober 21

Sixty-five days after being exiled by the Emperor Maxentius to Sicily, Pope Eusebius dies.

Election of Pope Conon following the death of Pope John V.

El Cid and his forces defeat a larger army of the Almoravids in the battle of Cuarte.

A Seljuk Turkish army successfully ambushes the People's Crusade at the Battle of Civetot.

First Crusade: Crusaders led by Godfrey of Bouillon, Bohemund of Taranto, and Raymond IV, Count of Toulouse, begin the Siege of Antioch.

Zengi, atabeg of Aleppo, takes Baalbek from the Burid dynasty.

Election of Gregory VIII following the death of Pope Urban III.

Japanese Emperor Go-Kameyama abdicates in favor of rival claimant Go-Komatsu.

Martin Luther joins the theological faculty of the University of Wittenberg.

João Álvares Fagundes discovers the islands of Saint Pierre and Miquelon, bestowing them their original name of "Islands of the 11,000 Virgins".