sentences:  Kettwig gained town rights in 1857 and first belonged to the district of Duisburg, then to the district of Essen.In 1929, when the district of Essen was dissolved, Kettwig fell to the district 
  "Düsseldorf-Mettmann".The part of Kettwig south of the Ruhr, "Kettwig vor der Brücke", belonged to the earldom of Berg until 1814, then fell to the district of Düsseldorf until May 15, 1930 when it was merged with Kettwig.