Each of the titles [[Baron]], [[Viscount]], [[Earl]], and [[Marquess]] come with a grant of Domain from the [[Prince]]. The title of [[Duke]] does not come with the grant of a domain, but instead serves as liege lord over the lower titles, and his domain is effectively the combination of domains of their ???vassals. Often, the primogen of a clan holds not only the Duke title, but a second title with a grant of domain.