Historical accounts related to the early history of the Polish coronation sword are scant and often mixed with legend. The earliest known use of the name "Szczerbiec" appeared in the "Chronicle of Greater Poland" at the turn of the 14th century. According to this source, the sword was given to King Boleslaus the Brave (reigned 992–1025) by an angel; Polish kings were supposed to always carry it in battle to triumph over their enemies. During Boleslaus's invasion of Kievan Rus', he hit it against the Golden Gate of Kiev while capturing the city. It was the notch that appeared on the edge of the blade which gave the sword its name. This account, written three centuries after the events it describes, is implausible not only because of the customary reference to the sword's supernatural origin (compare Excalibur), but also because Boleslaus's intervention in the Kievan succession crisis took place in 1018, or about 19 years before the actual construction of the Golden Gate in 1037.