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.
| Rainier, Marquis of Montferrat | |
|---|---|
| Marquis of Montferrat | |
| Reign | 1100 – May 1135 |
| Predecessor | William IV |
| Successor | William V |
| Born | c. 1084 |
| Died | May 1135 (aged 50–51) |
| Spouse | Gisela |
| Issue | William V Joanna Matilda Adelasia |
| House | Aleramici |
| Father | William IV |
| Mother | Otta di Aglié |