|Covid-19|The First Crusade proceeds towards Palestine
February 9 – The crusaders defeat Ridwan of Aleppo.
June 3 – After eight months of the first Siege of Antioch, the crusaders take the city.
June 5 – Kerbogha, atabeg of Mosul, leader of the Seljuq Turks, arrives at Antioch, beginning the second siege a few days later.
June 28 – Kerbogha is defeated by the crusaders at the Battle of Antioch.
December 12 – After a month's siege, the crusaders take Ma'arra and massacre part of the population.
July 14 – Donation of Altavilla: Bohemond I, the new crusader ruler of Antioch grants commercial privileges and the right to use warehouses (fondaco) and the church of Saint John to the Republic of Genoa. This marks the beginning of Italian merchant settlements in the Levant.
August – The Fatimids retake Jerusalem from the Turks.
The Byzantine Empire retakes Smyrna, Ephesus and Sardis.
June or July – In the Battle of Anglesey Sound, a fleet led by Magnus Barefoot, King of Norway, reverses an Anglo-Norman invasion of north Wales. Magnus also conquers the Orkney Islands, the Hebrides and the Isle of Man for Norway.
March 21 – Cîteaux Abbey is founded by the Cistercian Order.
Hildegard of Bingen, German mystic writer and composer (d. 1179)
January 3 – Walkelin, first Norman bishop of Winchester
July 31 – Hugh of Montgomery, 2nd Earl of Shrewsbury
August 1 – Adhemar of Le Puy, papal legate
date unknown – Poppo II, Margrave of Carniola
probable – Baldwin II, Count of Hainaut
Year 1098 (MXCVIII) was a common year starting on Friday (link will display the full calendar) of the Julian calendar.
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