Ludwig of Arnsberg
Ludwig of Arnsberg (c. 1245–1313) ruled the County of Arnsberg from 1282, after years as co-ruler with his father Gottfried III. By his wife Petronella of Jülich he had thirteen children, and his son William succeeded him. He compromised with the expansionist archbishops of Cologne, avoiding open war.
His main work was internal: he exchanged outlying estates, recovered alienated lands and founded Sundern and Hagen through forest clearance. He died on 2 May 1313.