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|1058 by topic|
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|Births – Deaths|
|Establishments and disestablishments categories|
|Establishments – Disestablishments|
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- Early – Pope Stephen IX pronounces on the authenticity of the relics of Mary Magdalene at Vézelay Abbey in France, making it a major centre of pilgrimage.
- March 17 – King Lulach of Scotland is killed in battle against his cousin and rival Máel Coluim mac Donnchada, who later becomes King as Máel Coluim III.
- September 20 – Agnes de Poitou and Andrew I of Hungary meet to negotiate about the border zone, in present-day Burgenland.
- Antipope Benedict X is crowned pope, but later deposed.
- Pope Nicholas II is elected pope in December, and installed the following year.
- Boleslaus II takes office as duke of Poland.
- Construction begins on the Cathedral of Parma, Italy.
- Ealdred (archbishop of York) becomes the first English bishop to make a pilgrimage to Jerusalem.
- The Almoravids conquer the Berghouata.
- Al-Ghazali, Muslim theologian, jurist and mystic
- (probable year) Godefroy de Bouillon, the main leader of the First Crusade
- undated – Theodora Anna Doukaina Selvo, Venetian dogaressa (d. 1083)
- March 1 – Ermesinde of Carcassonne, countess and regent of Barcelona (b. 972)
- March 17 – Lulach, King of Scotland
- March 29 – Pope Stephen IX
- Casimir I of Poland (b. 1015)
- Saint Ælfwold
- Ilduara Mendes, countess and regent of Portugal