Proper noun
Schlei
An estuary in Germany, in the region of Schleswig-Holstein.
There, a small peninsular area is still called " Angeln " today and is formed as a triangle drawn roughly from modern Flensburg on the Flensburger Fjord to the City of Schleswig and then to Maasholm, on the Schlei inlet. Source: Internet
In 1050, following several destructions, the population was moved to the opposite shore of the Schlei, becoming the city of Schleswig. Source: Internet