* 1204 – Eleanor of Aquitaine ( b. 1122 )

* 1204 – Constantinople falls to the Crusaders of the Fourth Crusade, temporarily ending the Byzantine Empire.

* Michael Angold ( 1997 ), The Byzantine Empire, 1025 – 1204, Longman, 2nd ed., pp. 136 – 70.

* Michael Angold, The Byzantine Empire, 1025 – 1204: A Political History, second edition ( London and New York, 1997 )

Alexios V Doukas, surnamed Mourtzouphlos (, d. December 1205, Constantinople ) was Byzantine Emperor ( 5 February – 12 April 1204 ) during the second and final siege of Constantinople by the participants of the Fourth Crusade.

* Anna Maria of Hungary ( c. 1204 – 1237 ), wife of Tzar Ivan Asen II of Bulgaria

The Byzantine Empire, 1025 – 1204.

* 1263 – King Haakon IV of Norway ( b. 1204 )

* 1204 – Abû ' Uthmân Sa ' îd ibn Hakam al Qurashi, ruler of Minorca ( d. 1282 )

* 1204 – Maimonides, Spanish rabbi and philosopher ( b. 1135 )

Eleanor of Aquitaine () ( 1122 or 1124 – 1 April 1204 ) was one of the wealthiest and most powerful women in Western Europe during the High Middle Ages.

* 1192 – 1200 / 1204: Frederick I ( also count of Zollern as Frederick III )

* 1204 – 1218: Frederick II ( son of, also count of Zollern as Frederick IV )

* The Mishneh Torah ( also known as the Yad HaHazaka for its 14 volumes ; " yad " has a numeric value of 14 ), by Maimonides ( Rambam ; 1135 – 1204 ).

* 1204 – King Philip Augustus of France conquers Rouen.

Maimonides ( 1135 – 1204 CE ) relates that until the Babylonian exile ( 586 BCE ), all Jews composed their own prayers, but thereafter the sages of the Great Assembly composed the main portions of the siddur.

Byzantine empresses: women and power in Byzantium, AD 527 – 1204.

* 1204 – Baldwin IX, Count of Flanders is crowned as the first Emperor of the Latin Empire.

The Charte aux Normands granted by Louis X of France in 1315 ( and later re-confirmed in 1339 ) – like the analogous Magna Carta granted in England in the aftermath of 1204 – guaranteed the liberties and privileges of the province of Normandy.

* 1182 – Minamoto no Yoriie, Japanese shogun ( d. 1204 )

* " Historical Dynamics in a Time of Crisis: Late Byzantium, 1204 – 1453 " ( discussion of social dynamics from the point of view of historical studies )

* Heinrich of Klingen ( 1200 – 1204 )

Part of the relics were taken from Constantinople by Crusaders during the Fourth Crusade, in 1204, and ended up in Rome.

The Byzantine Empire, the successor to the ancient Roman Empire who ruled most of the Greek-speaking world for over 1100 years, had been fatally weakened since the sacking of Constantinople by the Latin Crusaders in 1204.

In 1204 it was lost when Constantinople was sacked by Crusaders, but its iconic type had been well fixed in numerous copies.

Although the Crusades were, in part, originally intended to support the Byzantine Empire at Constantinople from attack by Turkish invaders, the Fourth Crusade resulted in the sack of Constantinople by the Crusaders in 1204, which greatly upset Pope Innocent.

During the pillage of 1204, Basil's grave was desecrated by the invading Crusaders of the Fourth Crusade.

In 1204, the city was bought by the Republic of Venice as part of a complicated political deal which involved among other things, the Crusaders of the Fourth Crusade restoring the deposed Eastern Roman Emperor Isaac II Angelus to his throne.

Instead, in April 1204, the Crusaders of Western Europe invaded and sacked the Christian ( Eastern Orthodox ) city of Constantinople, capital of the Eastern Roman Empire ( Byzantine Empire ).

In 1204, he defended the Athenian Acropolis from attack by Leo Sgouros, holding out until the arrival of the Crusaders in 1205, to whom he surrendered the city.

When the Crusaders took Constantinople ( 1204 ), they found some Paulicians, whom the historian Geoffrey of Villehardouin calls Popelicans.

At the beginning of January 1204, Alexios IV retaliates against the Crusaders by setting fire to 17 ships and sending it against the Venetian fleet, but the attempt fails.

In 1204, after the Latin Crusaders captured the Byzantine capital, Constantinople, Byzantine forces were able to regroup in several provinces ; provincial noblemen managed to reconquer the capital after 60 years and preserve the empire for another 200 years after that.

Yassıada ( Plati ) was captured by the Latin Crusaders during the Fourth Crusade in 1204.

During the sack of 1204, the Crusaders looted the city and, among other things, removed the copper quadriga that stood above the carceres ; it is now displayed at St. Mark's Cathedral in Venice.

Known among the Byzantines as the Megàlos Pyrgos ( meaning " Great Tower " in Greek ), this tower was largely destroyed by the Latin Crusaders during the Fourth Crusade in 1204.

After the Crusaders captured Constantinople in 1204, the pronoia system continued in the Empire of Nicaea, where the emperors ruled in exile.

After the fall of Constantinople to the crusaders in 1204, Boniface of Montferrat, the leader of the crusade, was expected by both the Crusaders and the Byzantines to become the new emperor.

It was looted by Venetian Crusaders in the Fourth Crusade of 1204 and placed on the terrace of the basilica.

Most seriously, after the fall of Constantinople to the Fourth Crusade in 1204, and its eventual recovery by Michael VIII Palaeologus, there came to be three Byzantine successor states, each of which claimed to be the Roman Empire, and several Latin claimants ( including the Republic of Venice and the houses of Montferrat and Courtenay ) to the Latin Empire the Crusaders had set up in its place.

However, after Constantinople was conquered during the Fourth Crusade in 1204, Greece was divided among the Crusaders.

The Byzantine Empire, the successor to the ancient Roman Empire who ruled most of the Greek-speaking world for over 1100 years, had been fatally weakened since the sacking of Constantinople by the Latin Crusaders in 1204.

The Mandylion remained under Imperial protection until the Crusaders sacked the city in 1204 and carried off many of its treasures to Western Europe, though the " Image of Edessa " is not mentioned in this context in any contemporary document.

Similarly, it is thought that the Shroud of Turin disappeared from Constantinople in 1204 when Crusaders looted the city.

Its identity is unclear, as is the question whether the gate, conspicuously named in honour of the patron saint of Venice, was pre-existing or opened after the fall of the city to the Crusaders in 1204.