The Mongol Empire attempted to send darughachi to Goryeo of Korea in 1231, after the first (of six) invasions. According to some records, 72 darughachi were sent and Mongol military garrisons withdrawn. However, repeated rebellions and continued Goryeo resistance to Mongol dominion (the original darughachi that were stationed were all killed by Goryeo forces in the summer of 1232) made the stationing of darughachi difficult. While there are questions regarding the actual number of darughachi stationed (the extant record denoting 72 darughachi was itself a derivation of an older record that has been lost; Goryeo was too small a territory to merit so many darughachi; the names of none of the 72 darughachi remain, which is unusual considering the importance of their position), most reliable sources (including the "Goryeo-sa") indicate that at least some darughachi were stationed in Goryeo for the duration of its vassaldom to the Mongol Empire. While further mention of the darughachi in Korea is scarce in extant sources, after peace was secured between Goryeo and the Mongol Empire in 1259 establishing Korea as a vassal to the Empire, the stationing of darughachi in Korea was likely a more stable proposition.