Mecklenburg (German pronunciation: [ˈmeːklənbʊʁk]; Low German: Mękel(n)borg [ˈmɛːkəl(n)bɔrx]) is a historical region in northern Germany comprising the western and larger part of the federal-state Mecklenburg-Western Pomerania. The largest cities of the region are Rostock, Schwerin, Neubrandenburg, Wismar and Güstrow. The name Mecklenburg derives from a castle named Mikilenburg (Old Saxon for "big castle", hence its translation into Neo-Latin and Greek as Megalopolis), located between the cities of Schwerin and Wismar.
https://en.wikipedia.org/wiki/Mecklenburg