Variants of the phrase "All Father" (like "Allfadir") usually refer to Wuotan (Woden, Óðinn/Odin), and the Franks probably believed in Wuoton as "chief" of blessings, whom the first historian Tacitus called "Mercurius", and his consort Freia, as well as Donar (Thor), god of thunder, and Zio (Tyr), whom Tacitus called "Mars". According to Herbert Schutz, most of their gods were "worldly", possessing form and having concrete relation to earthly objects, in contradistinction to the transcendent God of Christianity. Tacitus also mentioned a goddess Nerthus being worshipped by the Germanic people, in whom Perry thinks the Franks may have shared a belief. With the Germanic groups along the North Sea the Franks shared a special dedication to the worship of Yngvi, synonym to Freyr, whose cult can still be discerned in the time of Clovis.