Картлис цховреба
The placename is first mentioned in the thirteenth and fourteenth centuries in "The Georgian Chronicles" ( "Life of Kartli"), and in Persian sources. The name became common after the 1230s when the region was conquered by the Mongols. The first time the name was mentioned in medieval Armenian sources was in the fifteenth century, in Thomas of Metsoph's "History of Tamerlane and His Successors".