Lithuanian Diviriks - Celtic substrate?

From: Christopher Gwinn
Message: 1222
Date: 2000-01-28

I have often wondered about possible  Celtic borrowings in the Baltic, and this one definitely has me wondering:
 
The 13th century Volynija Chronicle mentions a Lithuanian divinity named Diviriks - the name has not been translated in any of the sources I have read, and has been labelled "mysterious" (the name might be a byname of Perkunas). I know that if the name is broken down into Divi-riks, the second part of the name seems to look like a relative of Gaulish Rix - which shouldn't naturally exist in Lithuanian.
 
The name grabbed my attention because there is a Celtiberian name - likely a divine name - Deiuoreiks "God-king" (Deiuo "god" reiks "king"). Is it possible that Diviriks is the same name, borrowed by the Lithuanians - perhaps through a Germanic source - or can it be possible  that Celts might have entered the Baltics during their time of expansion in the Iron Age (I am thinking also of a classical author - need to look the name - who claimed that soma people in the Baltics spoke the same language as the British - it is likely just a false story - but could there be any truth to it at all?).