title: Otto II, Count of Rietberg
text: # Otto II, Count of Rietberg
  
  Otto II, Count of Rietberg (died 18 July 1389) was the ruling Count of Rietberg from 1365 until his death.
  
  ## Life
  
  He was the son of Conrad III and his wife Ermeswint of Reifferscheidt.
  
  He inherited Rietberg when his father died in 1365.
  
  He died on 18 July 1389 and was buried in the Marienfeld Abbey.
  
  ## Marriage and issue
  
  Around 1370, Otto II married Adelaide, the daughter of Otto of Lippe from the neighboring County of Lippe. They had the following children:
  
  * Conrad IV, who was Count of Rietberg from 1389 to 1428
  * John, a canon of Cologne, who fell in the Battle of Detern on 27 September 1426
  * Otto (d. between 6 July and 7 October 1406), Bishop of Minden from 1403 until his death
  