Ernstthal wurde durch die fünf Lauschaer Glasmeister Hans und Nicol Müller, Hans Georg Böhm und Christoph und Jakob Greiner gegründet.
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Ernstthal am Rennsteig is a municipality section of the so-called Glass-blower Town (de: Glasbläserstadt) Lauscha in the district of Sonneberg in Thuringia, Germany, close to the Thuringian Rennsteig.
Immediately after the fall of the wall in 1990, he returned to his homeland in Saxony, and from 1990 to 1994, served as a member of the Bundestag for the representative district, which included the communities of Glauchau, Rochlitz, Hohenstein, Ernstthal and Hainichen, in Saxony, for the Christian Democratic Union.