Timeline of Hungarian history

5th century BC

• The Syginnae live in the Great Hungarian Plain. Archaeological finds show their commercial contacts with the Adriatic Veneti and Greeks.[1]

Early 4th century BC

• Celts invade Pannonia and gradually conquer the lands along the Middle Danube.[2]

3rd century BC

• The Celticisation of Transdanubia is completed and the native languages disappear.[3]

279 BC

• Celts invade the Balkan Peninsula from the Middle Danube region, reaching as far as Greece.[2]

113 BC

• The Celtic Boii control the Middle Danube region when the Cimbri move across their territory during their migration towards the Alps.[4][5]

c. 50 BC

• The Osi, Cotini and Anarti live in the northern regions of the Great Hungarian Plain. The Dacians take control of the lands to the east of the river Tisza.[6]

c. 45 BC

• The Dacian king, Burebista, defeats the Celtic ruler, Critasirus, and occupies lands east and north of the Middle Danube.[7]

c. 44 BC

• Burebista dies and his kingdom disintegrates.[7][8]

35 BC

• The Romans force the Pannonian tribes living along the Sava into submission.[9]

Late 1st century BC

• Roman denarii start circulating in Transdanubia.[9]

13 BC

• The Roman generals Marcus Vipsanius Agrippa and Tiberius crush the Pannonian tribes' revolt between the Sava and the Dráva. The young Pannonians are captured and sold as slaves.[10]

c. 12 BC

• The Germanic tribe of Marcomanni force the Boii to abandon the lands north of the Middle Danube.[11]

11 BC

• The Romans include Pannonia in the Roman province of Illyricum, declaring the Danube as its northern border.[12][13]

10 BC

• The Roman general Marcus Vinicius launches an expedition across the Danube, forcing the Celtic tribes of the Great Hungarian Plain to make an alliance with the Roman Empire.[14]

6 AD

• Tiberius wages war against the Marcomanni. After the governor of Illyricum, Marcus Valerius Messalla Messallinus, orders the enlistment of the Pannonians in the Roman army, the Illyrian tribes rose up. Tiberius abandons his military campaign along the Elbe to fight against the rebels.[15][16]

6–9

• The Romans force the Illyrian tribes one by one into submission.[17]

8/9

• Illyricum is divided into two along the Sava. The new Roman province incorporating the lands between the Sava and the Middle Danube is known as Pannonia.[18][19]

10s

• The Sarmatian tribe of the Iazyges settle in the plains between the Danube and the Tisza and force the Dacians to withdraw to Transylvania.[18]
• Emperor Tiberius settles veterans and civilians at Scarbantia (now Sopron) and Salla (now Zalalövő) on the Amber Road.[20]

c. 18–c. 50 AD

• Allied with Rome, Vannius, king of the Germanic Quadi, forces the tribes of the Great Hungarian Plain to pay tribute to him.[21]

40s–50s

• Emperor Claudius establishes the colonia (or town) of Savaria (now Szombathely) on the Amber Road, settling veterans of the Legio XV Apollinaris in the town. Colonists from Aquilea and other north Italian towns move to Savaria and natives also live in the town.[22]
• Pliny the Elder lists the Boii, Azali, Eravisci, Cotini, Arabiates and Hercuniates among the native tribes living in Transdanubia in his Natural History. The native tribes are organized in civitates peregrinae (semi-autonomous districts supervised by a Roman military officer).[23][24]

c. 50

• Emperor Claudius forbids the governor of Pannonia, Sextus Palpellius Hister, to assist Vannius against his rebellious nephews, Sido and Italicus. Vannius is forced to abdicate and flee to Pannonia. His nephews divide his realm among themselves.[25]
• Natives are first recruited as auxiliaries in the Pannonian regions north of the Dráva.[18]
• Auxiliary forts are established at Arrabona, Brigetio and Aquincum (now Győr, Szőny and Budapest in Hungary).[26]

68–69

• The governor of Pannonia, Lucius Tampius Flavianus, intervenes in the struggle for the imperial throne in Rome. He dispatches Roman legionaries and the troops of Sido and Italicus to Rome to fight against Emperor Vitellius.[27]

c. 73

• The governor of Pannonia, Gaius Calpetanus Rantius, orders the strengthening of the auxiliary fort at Aquincum.[28]

88

• The Marcomanni and the Quadi refuse to support the Romans during Domitian's Dacian War. Emperor Domitian invade their territory, but he abandons the military campaign without defeating the Germanic peoples.[28]

89

• The Germanic tribes wage war against the Iazyges with Roman support.[29]

92/93

• The Iazyges invade Pannonia and route a Roman legion. Domitian comes to Pannonia and defeats the Iazyges.[30]

98

• Emperor Trajan appoints new kings to rule the Marcomanni and Quadi.[31]

c. 100

• A new fortress is built at Brigetio and the Legio XI Claudia is transferred to there. The Legio X Gemina is stationed at Aquincum.[32]
• Gorsium (now Tác) is made the center for the imperial cult in Pannonia.[33]

c. 104

• Pannonia is divided into two provinces, Pannonia Superior and Pannonia Inferior.[34]

106

• The newly established Legio XXX Ulpia Victrix replaces the Legio XI Claudia in Brigetio after the fall of Decebal's Dacian kingdom. The Iazyges take possession of the lowlands to the east of the Tisza. Roman watch towers are erected across the Middle Danube.[35][36]

117

• The Legio I Adiutrix replaces XXX Ulpia at Brigetio and Legio II Adiutrix takes over Aquincum from X Gemina.[37]

117–119

• The Iazyges make raids against Pannonia Inferior. Emperor Hadrian charges Marcius Turbo with the united command of Pannonia Inferior and Dacia to secure the coordination of military actions against the Iazyges and their allies, the Roxolani.[38]

119

• The Iazyges becomes Rome's foederati (or clients).[38]

124

• Hadrian make Aquincum a municipium.[39]

c. 135–c. 140

• The Marcomanni and Quadi make raids against both Pannonian provinces.[40]

136–138

• Hadrian's designated heir, Lucius Aelius, is made the governor of both Pannonian provinces.[40]

c. 140

• Hadrian appoints a new king to rule the Quadi.[41]

161

• Emperor Marcus Aurelius transfers the Legio II Adiutrix to the empire's eastern border at the beginning of the Roman–Parthian War, replacing it with Legio IV Flavia Felix in Aquincum.[42]

160s

• Vexillationes (or detachments) of the Danubian legions are sent to fight against the Parthian Empire. Marcus Aurelius plans to annex the territory of the Marcomanni and Iazyges and establishes two new legions, Legio II Italica and Legio III Italica.[43][44]

c. 166

• Start of the Marcomannic Wars. The Germanic Lombards and Ubii attack Pannonia near Brigetio, but the Roman troops defeat them. Ballomar, the king of the Marcomanni, and envoys from 10 other tribes dwelling along the Roman border enter into negotiations with the governor of Pannonia Superior, Marcus Jallius Bassus.[45][46]

167–171

• The Marcomanni, Quadi and Iazyges make a series of raids against Pannonia and Dacia, capturing tens of thousands of Roman provincials and seizing much booty.[47]

167–168

• Marcus Aurelius and his co-emperor, Lucius Verus, are planning to launch a military expedition across the Danube, but Lucius dies unexpectedly and a plague forces Marcus Aurelius to return to Italy.[48]

171

• The Quadi's request for free access to the Roman markets is denied.[49]

171–175

• Marcus Aurelius writes parts of his Meditations while staying in Pannonia during his campaigns against the neighboring Germanic tribes.[50]

172

• Marcus Aurelius defeats the Quadi, forcing them to make a peace and release their Roman prisoners. He appoints Furtius to be their new king. Groups of Quadi are allowed to settle in the Danubian provinces.[51]

173

• Marcus Aurelius forces the Marcomanni to make peace and abandon the lands along the northern banks of the Danube. The Quadi dethrone Furtius and elect Ariogaesus their new ruler.[52]
• Winter. Iazyges invade Pannonia across the Danube. Ariogaesus makes alliance with the Iazyges, but the Romans capture him.[53]

174

• Early. The Romans route the Iazyges. The Iazyges capture their king, Banadaspus, and elect Zanticus his successor.[53]

c. 174

• The remnants of the Cotini and the Germanic Naristae are settled in Pannonia.[53]

175

• The Iazyges agrees to release their Roman prisoners and to abandon the lands along the eastern banks of the Danube.[53]

177–178

• Germanic tribes and Iazyges make raids against Pannonia.[54]

178

• Summer. Marcus Aurelius and his co-emperor, Commodus, come to Pannonia to command the local troops in person.[54]
• Late. 40,000 Roman troops occupy the land of the Marcomanni and Quadi and winter there.[54][55]

180

• Spring. Marcus Aurelius prevents the Quadi from migrating to the north.[54]
• Autumn. Marcus Aurelius' successor, Commodus, makes peace with the Marcomanni and Quadi. He appoints Roman centurions to control the two tribes' activities before marching to Rome.[54][56]

c. 185

• Watchtowers are erected along the Middle Danube.[57]

193

• April 9. After Commodus' death, the governor of Pannonia Superior, Septimius Severus is proclaimed emperor by the Pannonian legions.[58]
• June. After seizing Rome, Septimius Severus musters primarily Pannonian troops to the Praetorian Guard.[58]

194

• Septimius Severus grants the rank of colonia to Aquincum.[59][60]

196

• Septimius Severus sends his son and heir, Caracalla, to Pannonia before his campaign against Clodius Albinus.[61]

202

• Septimius Severus personally inaugurates a new temple in Gorsium.[62]

212

• Caracalla grants Roman citizenship to all natives, but the conquered peoples (or dediticii) in the Roman Empire.[62]

212/213

• The Quadi invade Pannonia, but Emperor Caracalla had their king, Gaiobomarus, executed.[63]

214

• Caracalla makes the river Rába the new boundary between the two Pannonian provinces.[64]

c. 230

• Iazyges invade Pannonia.[65]

248

• Emperor Philip the Arab appoints Pacatianus the commander of the troops both in Pannonia Inferior and in Moesia Superior. The Illyriciani—the troops of the Danubian provinces—proclaim Pacatianus emperor, but they murder him when the Emperor appoints one of their number, Decius, their commander.[66][67]

249

• Summer. The Illyriciani proclaim Decius emperor.[68]

250s

• Quadi make raids against Pannonia.[69]

258–260

• The westward expansion of the Goths forces the Germanic Gepids and the Sarmatian Roxolani to move to the Carpathian Basin. Sarmatian and Germanic tribes make a series of raids against Pannonia. Emperor Gallienus settles groups of Marcomanni in Pannonia.[70]

260s

• Clashes between the Roxolani, Gepids, Iazyges and Vandals along the borders of Pannonia and Dacia.[71]

Early 270s

• Emperor Aurelian orders the evacuation of the province of Dacia.[72]

c. 278

• Iazyges invade Pannonia.[73]

282

• Emperor Carus defeats the Sarmatians and the Quadi.[74]

285

• The Sarmatians invade Pannonia, but Emperor Diocletian defeats them.[75]

290

• The Goths and the Taifali wage war against the Vandals and Gepids.[76]

293

• A Roman fort is built on the left bank of the Danube opposite Aquincum.[77]
• Diocletian defeats the Sarmatians.[78]

294

• A canal is built between the Lake Balaton and the Danube.[79]

295

• Carpians are settled around Sopianae.[80]

Late 290s

• Both Pannonian provinces are divided into two, with their parts north of the Dráva forming Pannonia Prima and Pannonia Valeria provinces.[81]

303

• February 24. Diocletian forbids Christian worships in the Roman Empire.[82]
• June 8. Bishop Quirinus of Sescia (now Sisak in Croatia) is executed in Savaria.[83]

305

• Galerius and Constantine invade Sarmatian territory.[84]

308

• November. Pannonia is assigned to Emperor Licinius.[85]

314

• October 8. Battle of Cibalae: Constantine defeats Licinius, forcing him to abandon Pannonia.[85]

320s-330s

• New fortifications are built on plateaus along the Middle Danube.[86]

322

• May–June. A Sarmatian chieftain, Rausimodus, besieges Campona (in present-day Budapest), but Constantine forces him to abandon the siege.[87]

332

• The Goths invade Sarmatian territory, forcing the Argaragantes (the ruling Sarmatians) to arm their unfree subjects, the Limigantes. The Romans intervene in the war on the Sarmatians' behalf and defeat the Goths. The Limigantes rose up and defeat the Argaragantes who flee to Vandal and Roman territory.[88][89]

332–334

• After a series of clashes with the Romans, the Sarmatians accept Roman protectorate.[88]

330s-350s

• The Vandals, Gepids and Goths take possession of the northern regions of the Great Hungarian Plain.[88]

356

• The Quadi invade Pannonia Valeria and the Sarmatians attack Pannonia Secunda.[90]

357

• Summer. Emperor Constantius II comes to Sirmium to conduct negotiations with the Quadi and the Sarmatians.[91]
• Winter. The Quadi and the Sarmatians make a raid against the Pannonian provinces.[91][92]

358

• April. Constantius II invade the Limigantes' territory and Roman troops from Pannonia Valeria attack the Quadi, forcing their leaders to pay homage to the Emperor.[92][93]
• Winter. The Limigantes make raids against their neighbors.[94]

359

• April. Constantius II meets with the envoys of the Limigantes near Aquincum. The envoys try to capture him, but his retainers massacre them. The Romans invade Sarmatian territory, destroying their settlements.[95][96]

365

• The Quadi and the Sarmatians invade Roman territories.[97]

c. 367

• Emperor Valentinian I's magister militum, Aequitius, had new fortresses built along the Middle Danube.[98]

374

• Early. The Quadi protest against the erection of a Roman fortress on their territory, but Dux Maximianus kills their king Gabinius.[99]
• July. The Quadi invade Pannonia Valeria and slaughter or capture the local peasants.[99]

375

• August–November. Valentinian I invade Quadi territories.[100]
• November 17. Valentinian I dies in Brigetio during the peace negotiations with the Quadi envoys.[100]

c. 375

• Roman coins cease to circulate in Pannonia to the north of the Dráva.[101]

378

• Late summer-Autumn. Goths, Alans and Huns invade the Balkan provinces and Pannonia after their victory over the Romans in the Battle of Adrianople.[102]

379–380

• Tribesmen make plundering raids against Pannonia.[102]

383

• Pannonian grain is traded for wine in northern Italy.[103]

395

• The attacks of the Marcomanni, Hun and Goth armies devastate Pannonia.[104]

401

• The Vandals march through Pannonia to Italy.[104]

402

• The Visigoths led by Alaric arrives in Pannonia from Italy.[104]

405

• The army of the Goth Radagaisus marches through Pannonia and attacks the Western Roman Empire.[104]

408

• The Visigoths return to Italy.[104]

c. 420s

• The Huns settle on the Hungarian Plain.[105]

427

• Pannonia Secunda and Pannonia Savia are ceded to the Huns.[106]

433

• The control of Pannonia Valeria is given up to the Huns.[107]
• The Roman administration withdraws from Pannonia Prima, the land is ceded to the Huns.[106]

442

• Sirmium is under the control of the Huns.[108]

c.450s

• Goths are settled in large numbers by Marcian in Pannonia.[109]
• After Attila's death, three Ostrogoth kingdoms come into existence. Western Pannonia is ruled by Theodemir, Vidimir controls the center region, the eastern parts of Pannonia belong to king Valamir.[110]
• Theoderic the Great, the son of the Ostrogoth King Theodemir, was presumably born in Pannonia.[111]

454

• A coalition of Germanic tribes defeats the Huns in the Battle of Nedao.[112]
• Sirmium is under Gepid control.[108]

455-456

• Successful campaigns by the Western Roman emperor Avitus in Pannonia, praised later by Sidonius Apollinaris.[113]

469

• After Valamir's death, the Ostrogoths defeat the armies of the Germanic and Sarmatian tribes in the Battle of Bolia.[114]

474

• The Ostrogoths led by Theoderic migrate from Pannonia to Lower Moesia.[115]

547

• The Langobards settle in Pannonia, permitted by Justinian I.[116]

c.565

• At the end of the reign of Justinian I, the Gepid-controlled Pannonian settlement of Sirmium is still a significant city, subsequently occupied by Justin II.[113]

566/567

• The Longobard king, Alboin, sends envoys to the Avar khagan, Baian, offering an alliance against the Gepids to him. Baian accepts the offer only after Gepidia is promised to him.[117]

567

• The Longobards and the Avars invade Gepidia. Cunimund, the last king of the Gepids, dies fighting against the Longobards. The Avars occupy Gepidia.[118]

568

• April. The Longobards and masses of Gepids, Sarmatians, Suebi and other peoples leave Pannonia for Italy. The Avars take possession of Pannonia.[119]

582

• The fall of Byzantine Sirmium to the Avars.[120]

776

• A Lombard lord, Aio, seeks refuge in Avar territory after a Lombard revolt against the Franks collapsed.[121]

782

• The Avar khagan and jugurrus send envoys to Charlemagne to Paderborn.[121][122]

788

• Frank and Bavarian troops defeat an Avar army near the river Ybbs.[123]

791

• Late August. Charlemagne's son, King Pepin of Italy, makes a raid against Avar territory.[124]
• Autumn. Charlemagne invades Avar territory, reaching as far as the river Rába, but an epidemic forces him to return to the Carolingian Empire.[124]

795/796

• Rebels murder the khagan and the jugurrus.[125]

795

• Autumn. Duke Eric of Friuli's Slav military commander, Vojnomir, sacks the khagan's seat.[126]

796

• Early. The Avar tudun swears fealty to Charlemagne and converts to Christianity.[126]
• Summer. Pepin of Italy invades Avar territory, forcing the khagan to yield without resistance and chasing Avar leaders as far as the river Tisza. Paulinus II, Patriarch of Aquileia and other bishops in Pepin's army decide to start proselytizing among the Avars.[127]

799

• Archbishop Arno of Salzburg appoints Theoderic to proselytize among the Carantans and their neighbors to the north of the river Dráva. Gerold, Prefect of Bavaria who accompanies Theoderic is killed before a battle against rebellious Avars.[128]

early 9th century

• The Life of Saint Emmeram—a hagiography of Emmeram of Regensburg—is rewritten to encourage clergymen to proselytize among the Avars.[129]

803

• Charlemagne sends an army to Pannonia. The Avar tudun and his Slav and Avar retainers come to Regensburg to pay homage to Charlemagne.[130]

c. 804

• Krum, Khan of Bulgaria, invades Avar territory and defeats an Avar army.[131]

805

• February. Charlemagne cedes the territory between Sabaria (now Szombathely in Hungary) and Carnuntum (now Petronell-Carnuntum in Austria) to the Christian Avar kapkhan, Theodorus, and his people whom Slavs forced to leave their homeland.[132]
• September 21. Charlemagne restores the khagan's authority over the Avars. The khagan converts to Christianity at the Fischa.[132]

811

• Spring. Charlemagne sends an army to Pannonia to prevent further clashes between the Avars and the Slavs.[133]
• November. The envoys of the Avar khagan and tudun and of the chiefs of the Slavs living along the Danube appear in Charlemagne's court in Aachen.[134][135]

822

• Envoys of Slav tribes (among them the Moravians and the Praedenecenti) and of the Avars come to the court of Charlemagne's son, Louis the Pious, in Regensburg.[136]

824

• Khan Omurtag of Bulgaria sends an embassy to Louis the Pious, offering peace. Louis the Pious sends an envoy to Bulgaria.[137]

825

• May. Negotiations about the borders of the Carolingian Empire and Bulgaria in Aachen.[138]

827

• The Bulgars sail up the Dráva and destroy the lands on both sides of the river.[138]

828

• Louis the Pious's son, Louis the German, launches an unsuccessful military campaign against the Bulgars.[139]

829

• The Bulgars destroy villages along the Dráva.[139]

830s

• Burials with consistent east–west orientation spread in Pannonia.[140]

833

• Expelled across the Danube by Prince Mojmir I of Moravia, Pribina comes to Pannonia. He is baptised and joins the retinue of Radbod, the newly appointed prefect of the March of Pannonia.[141]

c. 837

• After a conflict with Radbod, Pribina flees first to Bulgaria, then to Ratimir, Duke of Lower Pannonia.[142]

838

• After Radbod defeats Ratimir, Pribina and Radbod are reconciled. Pribina receives a large estate in fief on the Zala River.[143]

early 840s

• Pribina gathers people on his domains and builds the fortress Mosaburg on the Zala (now Zalavár).[144]

848

• Early. The wandering Saxon priest, Gottschalk of Orbais, stays in Pannonia.[145]
• October 12. Louis the German reward Pribina with the complete ownership of his estates in Pannonia.[146]

850

• January 24. Liupramm, Archbishop of Salzburg consecrates a church dedicated to Mary the Virgin in Mosaburg.[147]

860

• May 8. Louis the German grants 20 peasant households near Savaria to the Benedictine Mattsee Abbey.[148]
• November 20. Louis the German grants Savaria and other settlements in Pannonia to Adalwin, Archbishop of Salzburg.[148]

860s

• Offerings of food and drink disappear in burials in Pannonia.[140]

860/861

• Pribina dies fighting against the Moravians. His son, Kocel, inherits his estates.[149]

866–867

• The Byzantine missionaries, Constantine and Methodius, stay in Mosaburg during their journey from Moravia to Rome. Kocel learns the Glagolitic script and entrust 50 pupils to them.[150]

869

• Pope Hadrian II sanctions the use of Old Church Slavonic in liturgy. Methodius returns to Mosaburg as papal legate, but Kocel sends him back to Rome, requesting the Pope to appoint Methodius bishop of Pannonia. The Pope makes Methodius archbishop of Sirmium with jurisdiction in Pannonia and Moravia.[151]

870

• Early. Bishop Ermanrich of Passau captures Methodius.[152]

873

• Spring. Pope John VIII achieves the release of Methodius.[153]

c. 876

• Kocel dies.[154]

Hungarian chronicles written centuries after the events contain contradictory stories about the Conquest. Among them, the Gesta Hungarorum provides the most detailed narration, but its reliability is debated.[169] The timeline only presents events verified by contemporaneous sources.

c. 895

• Bulgarians and Pechenegs invade Etelköz while the bulk of the Magyar army is away on a military campaign. The Magyars leave Etelköz and cross the Carpathian Mountains to settle in the lowlands east of the Middle Danube.[165][170]

896

• Arnulf appoints Braslav, Duke of Lower Pannonia to rule Mosaburg and the March of Pannonia.[171]

899

• Summer. Arnulf persuades the Magyars (or Hungarians) to invade the Po Valley (in Italy).[172]
• September 24. Battle of Brenta: the Hungarians route Arnulf's opponent, King Berengar I of Italy.[172]

900

• The Hungarians occupy Pannonia (to the west of the Middle Danube).[173]
• November 20. Battle of Linz: Luitpold, Margrave of Bavaria and Richar, Bishop of Passau defeat the Hungarians who has invaded Bavaria.[173][174]

902

• The Hungarians invade Moravia.[173][174]

902–907

• The Hungarians destroy Moravia.[174]

904

• The Bavarians murder Kurszán at a banquet.[165][173]

907

• July 4–5. Battle of Brezalauspurc: the Hungarians annihilate a large Bavarian army and take control of the lands as far as the Enns.[173][175]

926

• Henry I, King of East Francia, agrees to pay an annual tribute to the Hungarians to prevent their raids.[176]

932

• Henry I denies to pay further tributes.[173]

933

• March 15. Battle of Riade: Henry I defeats the Hungarians who has invaded the Duchy of Saxony.[173]

934

• The Hungarians and Pechenegs make a joint plundering raid against the Byzantine Empire. The Byzantines agrees to pay a yearly tribute.[177]

c. 948

• A high-ranking Magyar chieftain, the horka Bulcsú, is baptised in Constantinople, but he continues to make raids against the Byzantine Empire.[178][179]

c. 949

• The second-ranking Magyar chieftain, Gylas, is baptised in Constantinople. The Ecumenical Patriarch consecrates a Greek monk, Hierotheos, bishop of Tourkia (or Hungary) and Hierotheos accompanies Gylas back to Hungary.[179][180]

c. 950

• Árpád's grandson, Fajsz, is the paramount leader of the confederation of the seven Magyar tribes and the Kabars.[181]

c. 955

• Jews living in Hungary forward Hasdai ibn Shaprut's letter to the Khazars.[182]

955

• August 10. Battle of Lechfeld: Otto I, King of Germany, annihilates the Hungarian raiders near Augsburg.[159]

960s–990s

• The Bavarians gradually seize the territory between the Enns and Leitha rivers.[183]

970

• March. Battle of Arcadiopolis: the Byzantines defeat the united Rus', Bulgarian and Hungarian armies.[184][185]

early 970s

• German and Italian missionaries came to Hungary. Géza, Grand Prince of the Hungarians—Árpád's great-grandson—is baptised, but he does not fully abandon the veneration of pagan deities.[186]

973

• Easter. Hungarian delegates are present at Otto I's court in Quedlinburg.[187]

c. 997

• Géza's son, Stephen, marries Gisela, a relative of Otto III, Holy Roman Emperor who is accompanied by German knights to Hungary.[188]

997

• Géza dies and his kinsman, Koppány, contests Stephen's right to succeed his father. German knights assist Stephen to defeat Koppány.[189]

c. 1000

• The establishment of the earliest Benedictine abbey, Pannonhalma and of the first Roman Catholic dioceses (Veszprém, Esztergom and Győr).[note 2][190]

1000

• December 25. Stephen is crowned the first king of Hungary in Esztergom.[note 3][189]

1000s

• Stephen I issues his earliest decrees, ordering the building of churches and prohibiting pagan practices.[note 4][190]

1002–1009

• The first counties—territorial units of royal administration—are mentioned in royal charters. Each county was headed by an appointed royal official, styled ispán (or count).[191]

c. 1003

• Ajtony a chieftain ruling Banat is baptised in Vidin. He establishes a Greek monastery in his seat at Morisena (now Cenad in Romania).[192]

1003

• Stephen I invades Transylvania, forcing his maternal uncle, Gyula, into submission.[189]

1018

• Stephen I opens Hungary to pilgrims coming from Western Europe to Jerusalem.[193]

c. 1020

• Bishop Fulbert of Chartres sends a copy of Priscian's Grammar to Bonipert, Bishop of Pécs, implying the existence of a cathedral school at Pécs.[194]

1020s

• A king's mirror entitled Admonitions is completed in Hungary.[195]

c. 1028[note 5]

• Stephen I's military commander, Csanád, defeats Ajtony. Ajtony's realm is transformed into a county. The Greek monks are transferred from Morisena to a nearby monastery and a Roman Catholic diocese is set up in Ajtony's former seat (which is renamed for Csanád).[196][197]

1030

• Conrad II, Holy Roman Emperor, invades Hungary, but the Hungarians repel his attack.[198]

1031

• Stephen I's son and heir, Emeric, dies unexpectedly.[198]

1030s

• Stephen I appoints his sister's son, the Venetian Peter Orseolo, to be his heir. Stephen I's cousin, Vazul, is executed and Vazul's sons—Andrew, Béla and Levente—are forced into exile.[199][200]