In German the area is simply known as Schleswig whereas in Danish the area is known as Sydslesvig.
Southern Schleswig is only known as a region differentiated from the rest of Schleswig-Holstein by a small amount of its inhabitants, mainly by the members of the Danish minority of Southern Schleswig[?].
Major cities in the southern part of Schleswig are Flensburg, Rendsburg, the city of Schleswig and Husum.
wikipedia.org dumped 2003-03-17 with terodump