The Teutonic Knights built a castle in the *Pilsāts Land of the Curonians and named it Memelburg, which would later be shortened to Memel. From 1252 to 1923 and from 1939 to 1945, the town and city were officially named Memel. Between 1923 and 1939, both names were in official use. Since 1945, the Lithuanian name of Klaipėda has been used.
