Can a plaintiff plead for another plaintiff in a personal injury action?

The defendants argue that the plaintiff cannot plead for another. In this case, the action was brought by the plaintiff alone. His wife and children have not commenced an action. In any event, Rule 119 provides that an individual may act in person, as is the case here, but an individual who does not act in person must be represented by a solicitor. Such individual cannot be represented by a lay person. This rule applies to spouses (Giagnocavo v. Canada (1995), 189 NR 225 (FCA)).