1252

This article is about the year 1252. For the character encoding (codepage), see Windows-1252.

Year 1252 (MCCLII) was a leap year starting on Monday of the Julian calendar.

1252 in various calendars

Gregorian calendar	1252 MCCLII
Ab urbe condita	2005
Armenian calendar	701 ԹՎ ՉԱ
Assyrian calendar	6002
Balinese saka calendar	1173–1174
Bengali calendar	658–659
Berber calendar	2202
English Regnal year	36 Hen. 3 – 37 Hen. 3
Buddhist calendar	1796
Burmese calendar	614
Byzantine calendar	6760–6761
Chinese calendar	辛亥年 (Metal Pig) 3949 or 3742     — to — 壬子年 (Water Rat) 3950 or 3743
Coptic calendar	968–969
Discordian calendar	2418
Ethiopian calendar	1244–1245
Hebrew calendar	5012–5013
Hindu calendars
- Vikram Samvat	1308–1309
- Shaka Samvat	1173–1174
- Kali Yuga	4352–4353
Holocene calendar	11252
Igbo calendar	252–253
Iranian calendar	630–631
Islamic calendar	649–650
Japanese calendar	Kenchō 4 (建長４年)
Javanese calendar	1161–1162
Julian calendar	1252 MCCLII
Korean calendar	3585
Minguo calendar	660 before ROC 民前660年
Nanakshahi calendar	−216
Thai solar calendar	1794–1795
Tibetan calendar	ལྕགས་མོ་ཕག་ལོ་ (female Iron-Boar) 1378 or 997 or 225     — to — ཆུ་ཕོ་བྱི་བ་ལོ་ (male Water-Rat) 1379 or 998 or 226

Events

By place

Europe

• April 6 – Saint Peter of Verona is assassinated by Carino of Balsamo.^[1][2]
• May 15 – Pope Innocent IV issues the papal bull Ad exstirpanda, which authorizes the torture of heretics in the Medieval Inquisition. Torture quickly gains widespread usage across Catholic Europe.^[3][4]
• June 1 – Alfonso X is proclaimed king of Castile and León.^[5]
• July – The settlement of Stockholm in Sweden is founded, by Birger Jarl.^[6][7]
• December 25 – Christopher I of Denmark is crowned King of Denmark, in the Lund Cathedral.^[8][9]
• The Polish land of Lebus is incorporated into the German state of Brandenburg, marking the start of Brandenburg's expansion into previously Polish areas (Neumark).^[10]
• The Lithuanian city of Klaipėda (Memel) is founded by the Teutonic Knights.^[11][12]
• The town and monastery of Orval Abbey in Belgium burn to the ground; rebuilding takes 100 years.^[13]
• Thomas Aquinas travels to the University of Paris, to begin his studies there for a master's degree.^[14][15]
• In astronomy, work begins on the recording of the Alfonsine tables.^[16]

Asia

• The classic Japanese text Jikkunsho is completed.^[17][18]
• The Chinese era Chunyou ends^[19] (→ Emperor Lizong).
• Mongol conquest of the Song dynasty: the Mongols take the westernmost province of the Song dynasty empire.^[20]
• New Mongol invasion of Tibet.

Births

• March 25 – Conradin, Duke of Swabia (d. 1268)^[21][22]
• Safi-ad-din Ardabili, Persian Sufi leader^[23][24]
• Eleanor de Montfort, Princess of Wales, English-born consort (d. 1282)^[25][26]

Deaths

• January 1 – Saint Zdislava Berka, Bohemian lay Dominican benefactress^[27]
• January 23 – Isabella, Queen of Armenia^[28]
• January – Bohemond V, Prince of Antioch^[29][30]
• February 3 – Sviatoslav III of Vladimir, Prince of Novgorod (b. 1196)^[31]
• April 1 – Kujō Michiie, Japanese regent^[32]
• April 6 – Saint Peter of Verona^[2]
• May 3 or May 4 – Günther von Wüllersleben, Grand Master of the Teutonic Knights^[33][34]
• May 30 – King Ferdinand III of Castile and Leon^[35][36]
• June 6 – Robert Passelewe, Bishop of Chichester^[37]
• June 9 – Otto I, Duke of Brunswick-Lüneburg^[38][39]
• June 29 – Abel, King of Denmark (b. 1218)^[40][41]
• August 1 – Giovanni da Pian del Carpine, Italian chronicler of the Mongol Empire^[42][43]
• November 27 – Blanche of Castile, queen of Louis VIII of France and regent of France (b. 1188)^[44][45]
• date unknown
  • John of Basingstoke, English scholar and ecclesiastic^[46][47]
  • Henry I, Count of Anhalt^[48]
  • Sorghaghtani Beki, Mongolian empress and regent^[49][50]
  • Catherine Sunesdotter, Swedish queen consort^[51]
  • Yesü Möngke, Khan of the Chagatai Khanate^[52]