 Since 1590 Johann Ernst withdrew himself from the government of the duchy, with his brother completely agreed it, that this should govern the duchy for five years alone, when this time had elapsed and finally agreed (in 1596) with its brother to a new divisionary treaty.The duchy of Saxe-Eisenach was taken by Johann Ernst as independent principality separated from Saxe-Coburg, who remained with Johann Casimir.Thus, Saxe-Eisenach, for the first time in his history, had his own independent political unit became within the Holy Roman Empire.