Eberhard II von der Mark (1365–1454) (Fr.
After purchasing the area around modern Sedan, Ardennes from his brother-in-law Louis de Braquemont, in 1424, he expelled the monks of the Benedictine Abbey of Mouzon and began construction on the Château de Sedan.
He died in 1454 and was succeeded by his eldest son Johann von der Marck-Arenberg (1410-1480).
Louis married Nicole d'Aspremont and started the cadet house of House of La Marck-Rochefort who went on to be Lords of Agimont, Neufchâteau and Orchimont, Counts of Rochefort and Montaigu.
[1] His illegitimate son, Godfrey (1410-1465), married Marie de Montjardin and started the cadet house of House of La Marck-Sprimont who were Lords of Sprimont, Amblève, Bomal and Hamal.