Hilda Ellis Davidson states that the goddesses Gefjun, Gerðr, Fulla, and Skaði "may represent important goddesses of early times in the North, but little was remembered about them by the time Snorri was collecting his material." On the other hand, Davidson notes that it is also possible that these goddesses are viewable as aspects of a single Great Goddess. Davidson calls Fulla and Volla "vague, uncertain figures, emerging from odd references to goddesses which Snorri has noted in the poets, but they suggest the possibility that at one time three generations were represented among the goddesses of fertility and harvest in Scandinavia."