It may have roots in the language of West Slavic inhabitants of the area of today's Berlin, and may be related to the Old Polabian stem berl-/birl- ("swamp").[1] Folk etymology connects the name to the German word for bear, Bär.[citation needed] A bear also appears in the coat of arms of the city.[2][self-published source] Also Albrecht der Bär may have given it its name.[citation needed]