1231

Kanki 3 (寛喜三年)

Other Events of 1231

• The Mongols first invade Korea; it does not fall to Mongol control until 1259.
• The three sets or types of duties of the shugo are formally incorporated into shogunate law, as the taibon sankajo, or Three Regulations for Great Crimes.

Previous Year 1230

1231

Following Year 1232