Rainier, Marquis of Montferrat
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Rainier or Renier (Italian: Ranieri; c. 1084 – May 1135), son of William IV, Marquis of Montferrat, was the sixth ruler of the state of Montferrat in north-west Italy from about 1100 to his death, and the first such to be identified in contemporary documents as Margrave of Montferrat.