 He considers the possibility that many of the tribes named in the Tribal Hidage were no more than administrative units and that some names did not originate from a tribe itself but from a place from where the people were governed, eventually coming to signify the district where the tribe itself lived.Barbara Yorke suggests that the "-sætan/sæte" form of several of the place-names are an indication that they were named after a feature of the local landscape.She also suggests the tribes were dependent administrative units and not independent kingdoms, some of which were created as such after the main kingdoms were stabilized.