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He held the counties of Bentheim, Tecklenburg, Steinfurt, Limburg an der Lenne, the Lordship of Rheda, possessions on the Lower Rhine and bailiff rights in the Archbishopric of Cologne.
When Count William III of Sayn-Wittgenstein-Sayn died in 1623 without clear heirs, the Archbishop of Cologne occupied the vacant County until the succession was settled.