The 1220s
423 sourced entries across 10 years, inside the 13th century. Each year below opens its own page; the lines under it are that year’s highest-ranked entries.
1220 CE50 entries
- April 26 – King Frederick II confirms rights of independence to the German bishops (the Confoederatio cum principibus ecclesiasticis) in an attempt to secure the election of his 9-year-old son, Henry VII as King of Germany.
- November – Genghis Khan dispatches his youngest son Tolui, at the head of an army (around 50,000 men), into the Khwarazmian province of Khorasan. His forces also include 300 catapults, 700 mangonels to discharge pots filled with naphtha, 4,000 storming-ladders, and 2,500 sacks of earth for filling up moats. Among the first cities to fall is Termez (captured after a two-day siege) and later Balkh.
- Llywelyn the Great, Welsh prince of Gwynedd, begins raiding Pembrokeshire to retake land that he accuses William Marshal (the Younger) of stealing. This also includes Wiston Castle.
1221 CE39 entries
- June 16 – The Jewish population of Erfurt (Duchy of Thuringia) is massacred after a ritual murder libel. A crowd storms the synagogue where the Jews have gathered with the threat of baptism or death. The Jewish quarter, including the synagogue, is razed: many Jews are tortured and killed.
- July 29 – The 9-year-old Go-Horikawa ascends to the Chrysanthemum Throne at the Kyoto Imperial Palace in Japan. He is a grandson of the late Emperor Takakura and a nephew of the exiled Go-Toba.
- November 24 – Battle of the Indus: Left with some 20,000 men, Jalal al-Din Mangburni has headed for the Indus River where Genghis catches up with him. In a desperate battle the Khwarezmain forces are destroyed, completing the Mongol conquest of the Khwarazmian Empire, while Jalal al-Din flees across the river and escapes into India.
1222 CE24 entries
- April 17 – Stephen Langton, Archbishop of Canterbury in England, opens a council at Osney Abbey, Oxford.
- August – After the death of John I of Sweden on March 10, 6-year-old Erik Eriksson is elected new King of Sweden (sometime between this time and July 1223).
- December 15 – The Golden Bull of 1222 is issued in Hungary, limiting the power of the monarchy over the nobility.
1223 CE60 entries
- January 18 – Rusudan becomes the new Queen of Georgia after her brother, King George IV, dies of injuries received four months earlier in the Battle of Khunan against the Mongols.
- April 14 – On the island of Sri Lanka, King Chodaganga Deva lands at Trincomalee on the Tamil New Year's Day (the 1st of Chittirai of Shaka era year 1145) and makes a large donation to fund the Hindu Koneswaram Temple. The event is commemorated in an inscription in the Sanskrit language in the temple.
- October 8 – At Montgomery in Wales, King Henry III of England reaches a peaceful settlement with Llywelyn ab Iorwerth, the powerful ruler of the semi-independent Principality of Gwynedd, following a mediation by Ranulf de Blondeville, the Earl of Chester.
1224 CE43 entries
- April 23 – William Marshal, 2nd Earl of Pembroke, one of the enforcers of the Magna Carta, marries Eleanor of England, Countess of Leicester, the nine-year-old daughter of the late King John of England and sister of King Henry III, in order to strengthen the Marshal family's connection with the House of Plantagenet.
- June 5 – The University of Naples is founded by Emperor Frederick II. Frederick's main purpose is to create an institution of higher learning that will put an end to the predominance of the universities of northern Italy, most notably these of Bologna and Padua, which are considered either too independent or under the strong influence of \Pope Honorius III.
- December – Theodore Komnenos (Doukas), ruler of the Despotate of Epirus, captures Thessaloniki – beginning the de facto Byzantine Empire of Thessalonica. Later, Theodore Komnenos was crowned Byzantine emperor but is not recognized as such by the rest of the Greek or Latin population.
1225 CE52 entries
- May 10 – Gerold of Lausanne, French bishop of Valence, becomes the new Latin patriarch of Jerusalem (until 1239).
- June 10 – Pope Honorius III issues the bull Vineae Domini custodes in which he approves the mission of two friars to Morocco. The bull is reissued in October when Honorius III exhorts the Dominican and Franciscan order to participate in that mission.
- December 31 – Lý Chiêu Hoàng, the only empress regnant in the history of Vietnam, marries Trần Thái Tông, making him the first ruler of the Trần dynasty.
1226 CE51 entries
- May 17 – Ralph Neville is appointed as the new Lord Chancellor of England by the Great Council of Regency, regent for the Kingdom of England during the reign of King Henry III.
- September 11 – The Catholic Church practice of eucharistic adoration among lay people formally begins in Avignon, Provence.
- December 23 – Jean Halgrin, the French Roman Catholic archbishop of Besançon, is offered the opportunity to be the Catholic patriarch of Constantinople, but declines the position because of health issues.
1227 CE38 entries
- January 11 – The city of Požga in Croatia is first mentioned, in a charter of King Andrew II of Hungary.
- August 18 – Genghis Khan dies during the fall of Yinchuan after a 21-year reign. His exact cause of death remains a mystery, and is variously attributed to being killed in action against the Western Xia, illness, falling from his horse, or wounds sustained during hunting. Genghis is succeeded by his third son, Ögedei Khan, who becomes the "Great Khan" of the Mongol Empire.
- Dōgen Zenji receives Dharma transmission and inka from his master Rujing in China, settling his "life's quest of the great matter", going on to introduce Sōtō Zen Buddhism into his native Japan.
1228 CE32 entries
- April 25 – The 16-year-old Isabella II, Holy Roman Empress and wife of Frederick II, dies after giving birth to her second child, Conrad IV, at Andria. He receives the title King of Jerusalem (as Conrad II) – with Frederick as regent. By his father, Conrad is the grandson of the Hohenstaufen Emperor Henry VI and great-grandson of the late Emperor Frederick I (Barbarossa).
- December 23 – Stephen of Anagni, Italian papal chaplain, is commissioned to collect a special tax in England, Ireland, Scotland and Wales to finance Gregory X's War of the Keys against Frederick II.
- Battle of Bolnisi: Khwarazmian forces led by Sultan Jalal al-Din Mangburni defeat a coalition of Georgians, Kipchaks, Alans, Vainakhs and Laks (some 40,000 men) at Bolnisi (modern Georgia).
1229 CE34 entries
- June – Emir Al-Ashraf Musa captures Damascus and acknowledges the supremacy of his elder brother Al-Kamil. His other brother, An-Nasir Dawud, is compensated with the lordship of Al-Karak in the Transjordan region.
- September 5 – A Catalan-Aragonese expeditionary army under King James I (the Conqueror) embarks with 155 ships, 1,500 knights and 15,000 men from Tarragona, Salou, and Cambrils, in southern Catalonia. He sets sail to conquer Majorca. On December 31, James finally conquers the island from the Almohad ruler, Abu Yahya.
- November 28 – Battle of Olustra: Eric XI (the Lisp and Lame) is defeated and deposed as king of Sweden by Canute II (the Tall), who proclaims himself the new ruler.