The aim of the article is to determine the ethnic attribution of the Catacomb cultures and to reconstruct historical events in the South Russia at the early the II mil. B.C. The ceramics of the early catacomb horizon is connected with the Corded Ware and Globular Amphorae cultures in Central Europe that are descendants of the Funnel Beaker culture. The peoples that were related to these cultures were the Old Europeans according to Prof. V.A. Safronov's conception. To author's mind they were the Proto-Celts that brought both the Catacomb ritual from the most western point of Europe, some celtic words that were fixed in the Georgian-Zahn language in the II mill.B.C. and some complicated celtic myths that were reflected in the Ossetic epos "Legends about the Narts". All these facts mean that the early catacomb comers into Eastern Europe were Proto-Celts as well.