May 24 – Duke Skule Bårdsson, claimant to the Norwegian throne, is defeated by King Haakon IV (the Old) and his supporters. He seeks refuge in Elgeseter Priory in Trondheim, and Haakon burns down the monastery, in which Skule is burned alive. Haakon becomes the undisputed ruler; this ends the civil war era in Norway, after 110 years.
July 15 – Battle of the Neva: A Swedish army under Bishop Thomas sails up the Gulf of Finland in their longboats. They proceed into the Neva River with the aim of seizing control over Lake Ladoga and from there, striking at the city of Novgorod. Prince Alexander rallies his druzhina comparable to the 'household' of western European countries, and decisively routs the Swedish forces, saving the Novgorod Republic from a full-scale enemy invasion from the North. As a result, Alexander wins his first military victory at the age of 19 and receives the title of Nevsky.[1]
Winter – Alexander Nevsky quarrels with the Kievan nobles (boyars) and merchants of Novgorod, probably about peaceful trade with the westerners. He is banished, along with his mother, wife, and his druzhina to take up residence in the region around Moscow, a minor town on the western border of the Principality of Vladimir-Suzdal.[2]
Summer – As-Salih Ayyub becomes ruler of Egypt, after deposing his half-brother Al-Adil II. Meanwhile, other members of the Ayyubid Dynasty are conspiring to depose him and replace him with his uncle, As-Salih Ismail. During his reign, As-Salih begins buying large numbers of Kipchak slaves, to form an elite core in the Egyptian army, known as Mamluks.[4]
Levant
October 10 – Richard of Cornwall, brother of King Henry III, arrives at Acre for a pilgrimage to Jerusalem. His pilgrimage has the approval of Emperor Frederick II, who is married to his younger sister, Isabella of England, and gives him the task to make arrangements with the Military Orders. On his arrival, Richard travels to Ascalon, where he is met by ambassadors from As-Salih Ayyub. As a negotiator, he is successful in the release of prisoners captured at Gaza (see 1239), and he also assists with the building of the citadel in Ascalon.[5]
Mongol Empire
Winter – The Mongols under Batu Khan cross the frozen Dnieper River and lay siege to the city of Kiev. On December 6, the walls are rendered rubble by Chinese catapults and the Mongols pour into the city. Brutal hand-to-hand street fighting occurs, the Kievans are eventually forced to fall back to the central parts of the city. Many people take refuge in the Church of the Blessed Virgin. As scores of terrified Kievans climb onto the Church's upper balcony to shield themselves from Mongol arrows, their collective weight strain its infrastructure, causing the roof to collapse and crush countless citizens under its weight. Of a total population of 50,000, all but 2,000 are massacred.[6]
Pope Gregory IX authorizes a Crusade against Novgorod, hoping that the Kievan Rus' will be too preoccupied dealing with the raiding Mongols to the east to defend.
Early northern summer – A succession crisis or other priorities results in the Mongols withdrawing behind their river barrier into the Ukraine and the Russias, leaving Central Asian and far Eastern Europe peoples tributary to the Khanates, but leaving Poland and Hungary to begin recovery and reorganization.[16][17]
Spring – Prince Alexander Nevsky is joined by his brother Andrey II (Yaroslavich) at Novgorod, supported with his elite druzhina (or 'household') from Suzdal. They head southwest across the frozen marshes, which cover much of the land between Novgorod and Pskov. On March 5, Alexander retakes the city almost without a struggle, before the larger Crusader garrison in nearby Izborsk can intervene.[29]
April – A Russian force led by Alexander Nevsky crosses the frontier between Novgorod and Livonian Crusader territory, to raid into Catholic Estonia. After that, Alexander breaks his army off into contingents to ravage the countryside. He is forced to turn back, when a local Crusader force under Bishop Hermann von Buxhövden defeats Alexander's advance guard at Mooste bridge south of Tartu.[30]
April 5 – Battle of Lake Peipus (or Battle on the Ice): Russian forces led by Alexander Nevsky, rebuff an invasion attempt by a Crusader army (some 2,600 men), including German Teutonic Knights. The opposing armies meet upon the frozen surface of Lake Peipus. The outnumbered Teutonic Knights are defeated on the slippery surface, by Alexander's elite druzhina and the Novgorod forces.[31]
July 21–22 – Battle of Taillebourg: French forces (some 25,000 men) under King Louis IX (the Saint) defeat King Henry III at the bridge over the Charente River near Taillebourg. After the battle, Louis continues to pursue the English troops, capturing many prisoners. Henry retreats with the remnants of his army to Bordeaux, where he spends the winter.
Summer – Alexander Nevsky sends envoys to Batu Khan, preemptively capitulating before the Mongols even though they have not reached Novgorod, and accepts his rule as Mongol overlord.
Spring – Siege of Esztergom: The Mongols under Batu Khan assault and destroy most of the Hungarian city of Esztergom. Batu Khan sends a reconnaissance party against the Holy Roman Empire.
Battle of Grobnik Field: Croatian forces under Béla IV stop the Mongol invasion in Hungary and Croatia. Béla rebuilds the country and orders the building of fortifications through his kingdom.
Siege of Sernya: Mongol forces led by Subutai besiege and capture Sernya. During the siege, Queen Narchat is killed as she and a small group of warriors attempt to flee the city.[33]
Batu Khan establishes the Golden Horde at Sarai and withdraws his forces after messengers arrive with the news that the Great Khan Ögedei Khan has died (see 1241).
England
May – Isabella of Angoulême, mother of Henry III, persuades him to mount an expedition to retake Poitou. On May 20, Henry arrives at Royan and joins the rebelling French nobles – forming an army (some 30,000 men). Louis IX exchanges letters with Henry to resolve the conflict, but the dispute escalates further.
Africa
Summer – In the Maghreb, after a string of successes against the Almohad Caliphate, Hafsid forces under Sultan Abu Zakariya Yahya, conquer the city of Tlemcen (modern Algeria). The Kingdom of Tlemcen becomes a vassal of Abu Zakariya, and is formed in a series of small states between his rule and the states of the Western Maghreb.[34]
February 10 – The 10-year-old Emperor Shijō (or Mitsuhito) dies suddenly, despite a dispute over who should follow him as sovereign, Go-Saga (son of former Emperor Tsuchimikado) ascends to the throne of Japan.
March – King Ferdinand III (the Saint) turns the independent Taifa of Murcia into a protectorate, and initiates the process of the colonization and Christianization of the region. He receives the submission of the Moors, under the terms of a peace agreement (the famous Treaty of Alcaraz).
Siege of Viterbo: Emperor Frederick II besieges Viterbo on request of the rebel citizens. The defenders are able to set fire to the siege towers and after signing a peace treaty, Frederick is persuaded to withdraw his army.[37]
Siege of Montségur: French forces (some 10,000 men) begin the siege of Château de Montségur to raze the stronghold held by the rebellious Cathars. The castle is defended by some 100 troops and 500 refugees.[38]
Spring – Henry III bestows the custody of Kenilworth Castle to Simon de Montfort. Simon's wife Eleanor, Henry's sister, already owned Odiham Castle (or King John's Castle) so Simon has two of the strongest fortresses in England under his control.
March 16 – Siege of Montségur: French forces capture and destroy Château de Montségur in Languedoc, after a 9-month siege. Some 200 'heretics' (perfecti and credentes) are burnt in a bonfire, near the foot of the castle. This marks the final defeat of the Cathars (or Albigensians); the followers become scattered fugitives, meeting in forests and mountain wilds.[41]
December – King Louis IX (the Saint) falls desperately ill of a severe malarian infection. Near-death, he vows that if he recovers he will set out for a crusade. Louis' life is spared and as soon as his health permits him, he takes the cross and immediately begins preparations for the Seventh Crusade.[43]
Levant
June – Khwarazmian forces (some 10,000 men) invade Syrian territory, ravaging the land and burning the villages. As Damascus is too strong for a siege, they attack Galilee, past the town of Tiberias – which they capture. The Khwarazmians attack further southward through Nablus towards Jerusalem.[44]
July 15 – Siege of Jerusalem: Khwarazmian horsemen attack and sack the 'holy city' of Jerusalem. There is bloody fighting in the streets, the Khwarazmian force their way into the Armenian Quarter, where they decimate the Christian population, and drive out the Jews. The city is left in a state of ruin.[45]
August 23 – The Tower of David surrenders to the Khwarazmian forces, some 6,000 Christian men, women and children march out of Jerusalem. As they move along the road toward Jaffa, they see crusader flags waving on the Walls of Jerusalem. Returning, some 2,000 of them are massacred.[46]
October 4 – The Crusaders assemble a force of some 1,000 cavalry and 6,000 men outside Acre, after hearing that Jerusalem is sacked by the Khwarazmians. They are joined by the Ayyubid forces (some 4,000 men) of Damascus and Homs – while Emir An-Nasir Dawud brings his army from Kerak.[47]
June 7 – Pope Innocent IV is driven from Rome by imperial forces of Emperor Frederick II, and travels secretly in disguise to Sutri. Genoese galleys prepared by his relatives are waiting for him at the port of Civitavecchia to take him to Genoa.
October 5 – Innocent IV flees to France and travels to Lyon, where he arrives on November 29. Although the city is nominally subject to the Holy Roman Empire, Innocent falls under the protection of Louis IX.
December 27 – Innocent IV summons a general council to meet in Lyon (some 140 bishops eventually come) to attend what becomes later the First Council of Lyon.
Winter – Siege of Jaén: Castilian forces under King Ferdinand III (the Saint) besiege the Moorish-held city of Jaén. During the siege Moorish knights sally out and manage to capture a Castilian supply caravan. Meanwhile, Ferdinand tries to launch attacks on the various city gates, but all are ineffective.
In witness of the toll taken by war and fiscal pressure in the Kingdom of Castile, the region of Segovia is described this year as depopulated and sterile.[49]
February 21 – Thomas, bishop of Turku (modern Finland), is granted resignation by Pope Innocent IV. He admits to committing several felonies, such as torturing and forging a papal letter.
December 1 – A rebellion arises among the Muslim subjects in the region of Valencia. As a punishment, King James I (the Conqueror), issues an order of expulsion of the Muslims from his realm, leading numerous people into exile in Andalusia and North Africa.[60]
Summer – King Henry I (the Fat) sends a Cypriot squadron of 8 galleys with 100 knights led by Baldwin of Ibelin, to Acre. With the support of the Italian colonists, they fitted out 7 more galleys and some 50 lighter ships, to relieve the siege at Ascalon – which is now blockaded by the Egyptian fleet.[62]
The Egyptian fleet (some 20 galleys) confronts the Crusader ships led by Baldwin of Ibelin at Ascalon. But before contact is made, it is caught in a sudden Mediterranean storm. Many of the Muslim ships are driven ashore and wrecked; the survivors sail back to Egypt.
October 15 – Egyptian forces under As-Salih Ayyub capture Ascalon by surprise – while a battering-ram forces a passageway under the walls right into the citadel. Most of the defenders are massacred, and the remainder of the garrison is taken prisoner.[63]
August 25 – Louis IX departs from Aigues-Mortes and Marseilles with a French expeditionary force (some 10,000 men) transported by 100 ships. An English detachment (some 5,000 men) under William Longespée (the Younger), grandson of King Henry III, and his mistress Ida de Tosny follows close behind with 36 transport ships.[65]
September 17 – Louis IX arrives at Limassol on the island of Cyprus. He gathers his forces and is well received by King Henry I (the Fat). The Crusaders are supplemented by nobles from Acre, including Grand Masters Jean de Ronay and Guillaume de Sonnac. Louis prepares a plan of campaign, with Egypt as the prime objective.[66]
December – Louis IX receives an embassy during his stay in Cyprus from the Mongol general, Eljigidei, who is viceroy in Persia. They bring a letter from Guyuk Khan (who had died by the time his envoys reached Cyprus[67]) with no demands of submission, but talking in terms about Mongol favouritism for Christianity, and a proposal of a joint invasion against the Ayyubid forces in Syria.[68]
December – Louis IX decides to spend the winter on Cyprus to make preparations against Egypt. Meanwhile, the nobles persuade him to start negotiations with Sultan As-Salih Ayyub to intervene in the internal Ayyubid affairs. But Louis rejects this offer and orders the Knights Templar to break off their negotiations with As-Salih.[69]
November 24–25 – In the middle of the night a mass on the north side of Mont Granier suddenly collapses, in one of the largest historical rock slope failures.[70]
December – Ferdinand III issues an edict to expel the Almohads out of Seville. Many Muslims sail to North Africa and others travel to Granada in Al-Andalus.
May 13 – King Louis IX (the Saint) assembles a Crusader fleet of 120 transports and embarks an army (some 15,000 men) at Limassol. Unfortunately, a storm scatters the ships a few days later. On May 30, Louis sets sail to Egypt – only a quarter of his forces sails with him, the others make their way independently to the Egyptian coast. Finally, the royal squadron arrives off Damietta on June 4 aboard Louis' flagship the Montjoie. The king's advisers urges a delay until the rest of his transports arrive before attempting to disembark, but Louis refuses.[71]
June 5 – Siege of Damietta: Louis IX lands with a Crusader force and captures Damietta, after a fierce battle at the edge of the sea. The onslaught of the knights of France and those of Outremer under John of Ibelin, force the Ayyubids back with heavy losses. At nightfall, Fakhr ad-Din withdraws his army over a bridge of boats to Damietta. Finding the population there in panic and the garrison wavering, Fakhr ad-Din decides to evacuate the city. On June 6, Louis marches triumphantly over the bridge into Damietta and builds a camp to attack Cairo.[72]
November 20 – Louis IX sets out (against the advice of his nobles) with a Crusader force from Damietta, along the southern road to Mansourah. A garrison is left to guard the city – where Queen Margaret of Provence and Patriarch Robert of Nantes remain. The Crusaders make slow progress along the Nile, carrying a number of supplies and equipment. After 32 days, Louis orders to make camp opposite the Ayyubid camp near Mansourah, protected by a branch of the river and fortifications. Both camps use their catapults to bombard each other.[73]
December – Louis IX consolidates his forces at Mansourah. After the death of Sultan As-Salih Ayyub, Fakhr ad-Din effectively becomes the ruler of Egypt. He takes command of the city's defense and his cavalry harasses the Crusaders but none of these skirmishes is successful in holding up the Crusader's advance. Meanwhile, Louis orders the construction of a dyke at Mansourah, although the Crusaders build covered galleries to protect the workmen, the Egyptian bombardment (particularly Greek fire), is so formidable that the work is halted.[74]
Europe
February 16 – Louis IX sends Andrew of Longjumeau on a diplomatic mission to meet the "Great Khan" of the Mongol Empire. He carries letters from Louis and the Papal States, and rich presents, including a chapel-tent lined with scarlet cloth and embroidered with sacred pictures. From Cyprus he goes to the port of Antioch in Syria and travels for a year to the khan's court at Karakorum.[75]
Winter – William of Villehardouin tours the Peloponnese and selects sites for new fortifications such as Grand Magne and Leuktron. At Mystras (ancient Sparta), he builds a fortress and a palace.
Asia
March – The Japanese Hōji period ends during the reign of Emperor Go-Fukakusa and the Kenchō period begins (until 1256).
Jean Mouflet makes an agreement with the abbot of Saint-Pierre-le-Vif in the Senonais region in France: in return for an annual payment, the monastery will recognize Jean as a "citizen of Sens". He is a leathermerchant, with a leather shop that he leases for the rent of 50 shillings a year. The agreement is witnessed by Jean's wife, Douce, daughter of a wealthy and prominent citizen of Sens, Felis Charpentier.
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