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Millennium: 2nd millennium
1104 in various calendars
Gregorian calendar1104
Ab urbe condita1857
Armenian calendar553
Assyrian calendar5854
Balinese saka calendar1025–1026
Bengali calendar511
Berber calendar2054
English Regnal yearHen. 1 – 5 Hen. 1
Buddhist calendar1648
Burmese calendar466
Byzantine calendar6612–6613
Chinese calendar癸未年 (Water Goat)
3800 or 3740
    — to —
甲申年 (Wood Monkey)
3801 or 3741
Coptic calendar820–821
Discordian calendar2270
Ethiopian calendar1096–1097
Hebrew calendar4864–4865
Hindu calendars
 - Vikram Samvat1160–1161
 - Shaka Samvat1025–1026
 - Kali Yuga4204–4205
Holocene calendar11104
Igbo calendar104–105
Iranian calendar482–483
Islamic calendar497–498
Japanese calendarKōwa 6 / Chōji 1
Javanese calendar1009–1010
Julian calendar1104
Korean calendar3437
Minguo calendar808 before ROC
Nanakshahi calendar−364
Seleucid era1415/1416 AG
Thai solar calendar1646–1647
Tibetan calendar阴水羊年
(female Water-Goat)
1230 or 849 or 77
    — to —
(male Wood-Monkey)
1231 or 850 or 78
Statue of King Alfonso I (r. 1104–1134).

Year 1104 (MCIV) was a leap year starting on Friday (link will display the full calendar) of the Julian calendar.


By place[edit]

Byzantine Empire[edit]


  • Spring – The Crusaders, led by Bohemond I, re-invade the territory of Aleppo, and try to capture the town of Kafar Latha. The attack fails, owing to the resistance of the local Banu tribe. Meanwhile, Joscelin of Courtenay cuts the communications between Aleppo and the Euphrates.[2]
  • May 7Battle of Harran: The Crusaders under Baldwin II are defeated by the Seljuk Turks. Baldwin and Joscelin of Courtenay are taken prisoner. Tancred (nephew of Bohemond I) becomes regent of Edessa. The defeat at Harran marks a key turning point of Crusader expansion.
  • May 26 – King Baldwin I captures Acre, the port is besieged from April, and blockaded by the Genoese and Pisan fleet. Baldwin promises a free passage to those who want to move to Ascalon, but the Italian sailors plunder the wealthy Muslim emigrants and kill many of them.[3]
  • Autumn – Bohemond I departs to Italy for reinforcements. He takes with him gold and silver, and precious stuff to raise an army against Emperor Alexios I (Komnenos). Tancred becomes co-ruler over Antioch – and appoints his brother-in-law, Richard of Salerno, as his deputy.[4]
  • Toghtekin, Seljuk ruler (atabeg) of Damascus, founds a short-lived principality in Syria (the first example of a series of Seljuk ruled dynasties).



By topic[edit]


  • Autumn – The volcano Hekla erupts in Iceland and devastates farms for 45 miles (some 70 km) around.[7]





  1. ^ Steven Runciman (1951). A History of the Crusades. Vol II: The Kingdom of Jerusalem, p. 37. ISBN 978-0-241-29876-3.
  2. ^ Steven Runciman (1951). A History of the Crusades. Vol II: The Kingdom of Jerusalem, pp. 32–33. ISBN 978-0-241-29876-3.
  3. ^ Malcolm Barber (2012). The Crusader States, pp. 68–69. Yale University Press. ISBN 978-0-300-11312-9.
  4. ^ Steven Runciman (1951). A History of the Crusades. Vol II: The Kingdom of Jerusalem, p. 38. ISBN 978-0-241-29876-3.
  5. ^ Kennedy, Maev (July 28, 2017). "St Cuthbert's coffin features in new display at Durham Cathedral". The Guardian. Retrieved April 27, 2018.
  6. ^ Squires, Nick (2018). "Italian navy hires out Venice's feted Arsenale for conventions to make up for government cuts". The Telegraph. Retrieved April 27, 2018.
  7. ^ "Hekla - volcano, Iceland". Encyclopedia Britannica. Retrieved April 27, 2018.
  8. ^ "Beaumont, Robert de Earl of Leicester 1104-1168". Worldcat. Retrieved April 27, 2018.