The
Germania manuscript corpus contains two primary variant readings of the name. The most frequently occurring,
Tuisto, is commonly connected to the
Proto-Germanic root
*twai – "two" and its derivative
*twis – "twice" or "doubled", thus giving Tuisto the core meaning "double". Any assumption of a gender inference is entirely conjectural, as the tvia / tvis roots are also the roots of any number of other concepts / words in the Germanic languages. Take for instance the Germanic "twist", which, in all but the English has the primary meaning of "dispute / conflict". The second variant of the name, occurring originally in manuscript
E, reads
Tuisco. One proposed etymology for this variant reconstructs a Proto-Germanic
*tiwisko and connects this with Proto-Germanic
*Tiwaz, giving the meaning "son of Tiu". This interpretation would thus make Tuisco the son of the sky-god (
Proto-Indo-European *
Dyeus) and the earth-goddess.
Tuisto, Tvastar, and Ymir Connections have been proposed between the 1st-century figure of Tuisto and the primeval being
Ymir in later
Norse mythology, attested in 13th-century sources, based upon etymological and functional similarity. Meyer (1907) sees the connection as so strong, that he considers the two to be identical. Lindow (2001), while mindful of the possible semantic connection between Tuisto and Ymir, notes an essential functional difference: while Ymir is portrayed as an "essentially ... negative figure" – Tuisto is described as being "celebrated" (
celebrant) by the early Germanic peoples in song, with Tacitus reporting nothing negative about Tuisto. Jacob (2005) attempts to establish a genealogical relationship between Tuisto and Ymir based on etymology and a comparison with
Vedic Indian mythology: as
Tvastr, through his daughter
Saranyū and her husband
Vivaswān, is said to have been the grandfather of the twins
Yama and
Yami, so Jacob argues that the Germanic Tuisto (assuming a connection with Tvastr) must originally have been the grandfather of Ymir (cognate to Yama). Incidentally, Indian mythology also places
Manu (cognate to Germanic Mannus), the Vedic progenitor of mankind, as a son of Vivaswān, thus making him the brother of Yama/Ymir. ==Attestation==