In 1348, the Luxembourg king Charles I, also King of the Romans and Holy Roman Emperor (as Charles IV) from 1355, founded the Charles University in Prague ("Alma Mater Carolina"), the first in Central Europe, attended by large German student nations, and its language of education was Latin. Czechs made up about 20 percent of the students at the time of its founding, and the rest was primarily German. A culturally-significant example of German Bohemian prose from the Middle Ages is the story "Der Ackermann aus Böhmen" ("The Ploughman from Bohemia"), written in Early New High German by Johannes von Tepl (c. 1350 – 1414) in Žatec ("Saaz"), who probably had studied liberal arts in Prague.