County of Mark
From 1281, Eberhard formed an alliance with the Counts of Berg, Cleve and Jülich against the Electorate of Cologne and gained the independence of the County of Mark from the Archbishop of Cologne after the victory in the Battle of Worringen in 1288. He also obtained Brakel, Westhofen and Waltrop. Eberhard died 4 July 1308 and was buried in Fröndenberg Monastery.