Otto IV, Count of Rietberg

This led to many disputes between Otto IV and his half-brother John II from their father's second marriage.

In 1544, he returned to Germany and joined the staff of the Teutonic Knights.

Otto IV died before Metz on 5 or 6 January 1553.

His cousin Frederick Wetter administered the County of Rietberg until Otto's half-brother John II took over.

Before 1 February 1541, Otto IV married Catharine, the youngest daughter of Count Palatine Alexander of Zweibrücken.