The story
On Monday January 1, 2007 Guldborgsund municipality was created as the result of Kommunalreformen ("The Municipal Reform" of 2007), consisting of the six former municipalities of Nykøbing Falster (located partly on the island of Falster and partly on Lolland (its Sundby section)), Nørre Alslev (Falster), Stubbekøbing (Falster), and Sydfalster (Falster) and two of the six former municipalities located on the island of Lolland: Sakskøbing and Nysted.
From Wikipedia’s article on Guldborgsund Municipality, shared under CC BY-SA 4.0.5
