Gojong of Goryeo (3 February 1192 – 21 July 1259), sometimes spelled Ko-tjong, was the twenty-third ruler of Goryeo in present-day Korea from 1213–1259. Gojong's reign was marked by prolonged conflict with the Mongol Empire, which sought to conquer Goryeo, ending only to settle peace in 1259. During his reign actual power rested with the Choe family of military dictators.