João asks:
>What's the true etymology of Indo-Iranian WIWASWANT (Indian Vivasvat,
Avestan Vivanhat)?
A A McDonnell suggests it is from the root vi-vas "shine afar" - so roughly
as you suggest. In Rgveda x 14:5 he is the father of the king Yama.
Elsewhere (RV v 11:3) he is the first person to make a sacrifice.
Peter