 An exact date has never been determined.According to the 1340 document that contains Eschenau’s first documentary mention, Eschenau was granted to the Lords of Montfort, then represented by Sophie of Monfort.She was obliged to pay a tithe through the Church of Sankt Julian to the monastery on the Remigiusberg amounting to two "Malter" of wheat, two "Malter" of corn (possibly meaning rye), four "Malter" of oats and six "Logel" of wine.