Engelbert III of the Mark Count of the Mark (1333–1391) Parents Margaret of Cleves, Countess of the Marck Adolph II of the Marck Children Margareta von der Mark Siblings Dietrich of the Mark Adolf III of the Marck Eberhard von der Mark Mechtild von der Mark Margareta von der Mark Partners Richardis of Jülich Elisabeth of Sponheim