
It's a theory (specifically, a folk etymology), not a confirmed fact. The name Βυλάζωρα is attested in ancient Greek sources like Polybius for a Paeonian city centuries before Slavic speakers reached the Balkans. Mainstream references (Wiktionary, Wikipedia, archaeological reports) list the etymology as unclear with no accepted Slavic root. The "Bila Zora / White Dawn" link appears in some local Macedonian discussions but is rejected by linguists due to the timeline and lack of evidence.










