|Covid-19|April 11 – Murder of Stanislaus of Szczepanów (Pol. Stanisław ze Szczepanowa), Bishop of Kraków, personally by Bolesław II the Bold, King of Poland, who flees the country, leaving his brother Władysław I Herman to succeed him.
Persian astronomer Omar Khayyám computes the length of the year to be exactly 365.24219858156 days, the most accurate calculation of his time. Khayyam also, in Treatise on Demonstrations of Problems in Algebra, produces a complete classification of cubic equations and their geometric solutions.
Upon the death of Håkan the Red, Halsten returns as king of Sweden, jointly with his brother Inge the Elder.
William I of England establishes the New Forest.
Constance of Burgundy founds a monastery in Burgos.
August 8 – Emperor Horikawa of Japan (d. 1107)
Peter Abelard, French scholastic philosopher (d. 1142)
February 22 – John of Fécamp, Italian-born Benedictine abbot and spiritual writer (b. early 11th cent.)
April 11 – Stanislaus of Szczepanów, bishop of Kraków (b. 1030)
Håkan the Red, king of Gothenland since 1070 and king of Sweden since 1075
Mabel de Bellême, Norman noble (b. early 11th cent.)
Year 1079 (MLXXIX) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar.
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