Yes, but it's the only example I've seen so far. The phrase "Boio-" as a prefix is fairly common however (Boio-durum, Boio-rix, etc.) And I have not seen any satisfying etymology yet for "Tolisto-".
perhaps this from the proto-celtic table:
*(φ)listo-
There's no reason to assume that's the etymology.
"Boii" derives from the word for "cattle". Compare PIE "gwous", consider that PIE *gw yields *b in Celtic (*g in Slavic). Cognates actually exist in Slavic:
Czech Hovězí ("ox")
Croatian Goveče ("ox")
Slovenian Govedo ("cattle")
Bulgarian Govedo ("ox")
Serbian "vo" = ox
Even if it was a borrowing, how and why does the o dissappear (ie "Boii" -> "Bi")? I think you're following a false trail here (well, I've been thinking that all along anyways). The Boii were also long since gone when the Slavic peoples showed up in the Balkans.
you assume Slavic people came from east, but Serbs are recorded to have arrived from land they call in their language Boika and that by description matches only Bohemia/Bavaria both named by Boii... historical source says Serbs have also originally dwellt there, while we know that Boii are people who have originally dwellt there and that area is named after them...
in fact, not just I2a2, I would not be surprised if all I2 origins from Bohemia....I2b developed among those who spread to north, I2a1 among those who spread to south, I2a2 among those who spread to east..... thus I2a of Kurds is I2a2...
all of them are Cimmerians or Gomer
but the ones who spread to north (I2b) kept the name, while the ones who spread to south (I2a1) and east (I2a2) took name whose root is Sard/Sarb/Kurd
modern Serbs may origin from Serdi - who are thracanized branch of Scordisci... (thracans being ancestors of russians)
Boii in Slavic languages means "battle" and is in base of many words related to war
voj-nik = soldier, vojvoda = battle leader
interestingly, iapetoc relates origin of word serb to soldier as well...
similar holds for German (originally I2b people) tribal name...
btw. I find it peculiar that north part of Serbia is named Vojvodina, which maps to Boii being more towards north along Danube than Scordisci
my proposal is that Scordisci are related to Boii or same as Boii and that they origin in Bohemia... than they spread along Danube and around Black sea and entered Asia minor in several ways: first as Sherdana, later as Cimmerians, than as Serdi... today from those I2a people tribal name remains are preserved in nation names such as Kurds, Serbs, Sarbans and Sardinians....
the spread of Serians went all the way to northwest China, Caspian highlands and Red sea, which we know from writings of Seneca....
I think that those people were I2a2....
R1a pre-Baltic people lived in Dacia and R1a pre-Slavic as Thracians (essentially wrongly written word Russians written in Greek way...note that ancient Greek spelling system also turned in similar example Rasena into Tyrsenians), Pannonians, Veneti
in my opinion, Cimmerians were I2 people and Sherdana, Scordisci, Serdi were I2a
they were probably PIE people.... split between I2b, I2a1 and I2a2 Cimmerians gave Germanic, italic and east Celtic speakers...
ancient authors suggest that word German meant "seed" and was used to denote original Celts.... Josephus is sure that original Celts are Cimmerians/Cappadocians....Strabo records Cappadocians as whiteSyrians...additional reason to argue original Celts were I2 people is for instance lack of R1b in north Africa while I2a1 is widely present, while Celts are recorded to live in Africa, Asia and Europe...who are they in north Africa if not Garamantes, advanced civilization that with irrigation systems turned Sahara into agricultural area, whose capital Germa is near town Seba?