Montferrat, William Guillaume de V
| Birth Name | Montferrat, William Guillaume de V 1 2 |
| Gender | male |
| Age at Death | between 75 years, 1 day and 81 years |
| Birth date | between 1110 and 1115 (Baden, Marne, Champagne-Ardenne, France) |
| Death date | 1191 (Montferrat, Alessandria, Piemonte, Italy) |
