Egon VIII of Fürstenberg-Heiligenberg Tags: Noble.Ernst Egon VIII of Fürstenberg-Heiligenberg (March 21 1588 in Speyer † 24 August 1635 in Constance) was Imperial Count of Fürstenberg-Heiligenberg (1618–1635) and Bavarian Field-marshal and an important military leader in the Thirty Years’ War. thumbnail birth date 1588-03-21 birth place Speyer death date 1635-08-24 death place Konstanz predecessor Frederick IV of Fürstenberg spouse Egon VIII of Fürstenberg-Heiligenberg successor Herman Egon Prince of Fürstenberg title Count of Fürstenberg Learn more... Loading...