Already Friedrich Wilhelm Christian von Hagen, Born on 18.3.1754 Uthleben near Nordhausen was already chief forester in Ilsenburg. From his two marriages 1. Sophie Christine Liesenberg +18.9.1798 Ilsenburg and 2. mit Christiane Charlotte Hardegen +24.4.1851 Ilsenburg, nine children are known and the six sons of whom I would like to describe here in detail, continued this tradition and devoted themselves to the forestry profession. The first son of Heinrich August *13.11.1776 Ilsenburg was forester in Silesia, Two son, Karl Ludwig *12.1.1787, was forester in Annaburg.