Freiherr
Title of nobility
Freiherr, Freifrau and Freiin are designations used as titles of nobility in the German-speaking areas of the Holy Roman Empire and in its various successor states, including Austria, Prussia, Bavaria, Liechtenstein, Luxembourg, etc. Wikipedia
Past holders: Heinrich Friedrich Karl vom und zum Stein, Manfred von Richthofen, Baron Münchhausen, and more