Year 1246 (MCCXLVI) was a common year starting on Monday (link will display the full calendar) of the Julian calendar.
The Mexicans settle Chapultepec, a former Toltec stronghold.
Emperor Go-Fukakusa succeeds Emperor Go-Saga on the throne of Japan.
Güyük Khan is enthroned as the 3rd Great Khan of the Mongol Empire (an event also witnessed by a papal mission under Giovanni da Pian del Carpine) at Karakorum.
With the death of Duke Frederick the Quarrelsome, the Babenberg dynasty ends in Austria.
Spain: After two unsuccessful sieges in 1225 and 1230, the Castillans manage to take the city of Jaén from the Andalucians at the Siege of Jaen.
The Gothic chapel of Sainte-Chapelle is built.
Robert Grosseteste translates Aristotle's Nichomachean Ethics from Greek into Latin, which marks the true start of the rediscovery of the philosopher by Medieval Europe.
The perihelion of the Earth's orbit coincided with the December solstice.
Beaulieu Abbey is dedicated.
September 14 – John FitzAlan, 7th Earl of Arundel (d. 1272)
February 25 – Dafydd ap Llywelyn, prince of Wales
June – Richard Fitz Roy, illegitimate son of John of England
June 4 – Isabella of Angoulême, queen of John of England
June 15 – Duke Frederick II, Duke of Austria (b. 1219)
September 20 – Mikhail of Chernigov, Prince of Kiev
September 30 – Yaroslav II of Russia (b. 1190)
November 8 – Berengaria of Castile, queen of Castile and León (b. 1196)
date unknown
Ednyfed Fychan, seneschal of Gwynedd
Sayyid Muhammad Al-Makki, ancestor of the Bukkuri Sayyids (b. 1145)
Fatima, Mongolian senior office holder.
1246 Wikipedia (Text) CC BY-SA