|Covid-19|March 26 – Henry I of England's forces defeat Norman rebels at Bourgtheroulde.
April 27 – David I succeeds Alexander I to become King of Scotland.
December 21 – Pope Honorius II succeeds Pope Callixtus II as the 163rd pope.
Gaufrid is consecrated as the first Abbot of Dunfermline Abbey.
The Dun Beal Gallimhe is erected by King Tairrdelbach Ua Conchobair of Connacht.
In Ireland, Saint Malachy, the great reformer of the Church, is made a bishop.
Arnald becomes the first Bishop of Greenland.
July 7 – Tyre falls to the Crusaders.
Ottokar III of Styria, Margrave (d. 1164)
Possible date – Eleanor of Aquitaine, Duchess of Aquitaine, queen consort successively of France and England and patron of the arts (d. 1204)
February 2 – Bořivoj II, Duke of Bohemia
March 15 – Ernulf, Bishop of Rochester (b. c. 1040)
April 23 – King Alexander I of Scotland
December 13 – Pope Callixtus II
Guibert of Nogent, French historian and theologian (b. 1053)
Year 1124 (MCXXIV) was a leap year starting on Tuesday (link will display the full calendar) of the Julian calendar.