https://en.wikipedia.org/wiki/T%C3%BDr . Тут интересней написано. Собственно, все сводиться к "сиянию"
Týr (/ˈtɪər/;<1> Old Norse: Týr ) is a Germanic god associated with law and heroic glory in Norse mythology, portrayed as one-handed. Corresponding names in other Germanic languages are Gothic Teiws, Old English Tīw and Old High German Ziu and Cyo, all from Proto-Germanic *Tīwaz. The Latinised name is rendered as Tius or Tio and also formally as Mars Thincsus.<2>
И к "дею", Дионисы всякие"
https://en.wikipedia.org/wiki/Dyeus
Old Norse Týr, literally "god", plural tívar "gods", comes from Proto-Germanic *Tīwaz (cf. Old English Tīw, Old High German Zīo), which continues Proto-Indo-European *deiwós "celestial being, god" (cf. Welsh duw, Latin deus, Lithuanian diẽvas, Sanskrit dēvá, Avestan daēvō (false) "god"). And *deiwós is based in *dei-, *deyā-, *dīdyā-, meaning 'to shine'.<3>

The earliest attestation for Týr's continental counterpart occurs in Gothic tyz "the t-rune" (𐍄) in the 9th-century Codex Vindobonensis 795.<4> The name is later attested in Old High German as Cyo in the A Wessobrunn prayer manuscript of 814. The Negau helmet inscription (2nd century b.c.) may actually record the earliest form, teiva, but this interpretation is tentative.

Týr in origin was a generic noun meaning "god", e.g. Hangatyr, literally, the "god of the hanged", as one of Odin's names, which was probably inherited from Týr in his role as god of justice. The name continues on as Norwegian Tyr, Swedish Tyr, Danish Tyr, while it remains Týr in Modern Icelandic and Faroese.

Устойчивая песня - "день", куда пытались приплести и наше "день" (имеющее совсем другую этимологию), и использование "фиты", т.е.ТН
Ну, в биографии обязательно Христос.