Frühneuhochdeutsch
The Middle Low German language is an ancestor of the modern Low German. It was spoken from about 1100 to 1500, splitting into West Low German and East Low German. The neighbour languages within the dialect continuum of the West Germanic languages were Middle Dutch in the West and Middle High German in the South, later substituted by Early New High German. Middle Low German was the lingua franca of the Hanseatic League, spoken all around the North Sea and the Baltic Sea. Based on the language of Lübeck, a standardized written language was developing, though it was never codified.