Dali ste znali da su srednjovekovni Srbi imali imena Brajan, Rajan, Kola, Deda koja su takođe nadjena u Iriskim srednjovekovnim analima kao Brian, Rian, Colla, Deda?

The Census from Skadar region from 1485 and 1497, the medieval Serbian territory, today the border area between Kosovo, Makedonia, and Montenegro, lists all the personal names of the Serbian people living there for each village. You can see that Brajan, Rajan, Kola and Deda are very common medieval male Serbian names. But they are also Irish medieval male names Brian, Rian, Colla and Deda.

Balkans and the territory of the medieval Serbia in particular, was the Celtic Central for centuries before the Roman Conquest. If we look at the genetic, ethnographic and linguistic data (including these personal names), it seems that a lot of these „Balkan Celts” stayed on the Balkans and contributed to the ethnogenesis of the Serbians and other Balkan people.

You can read more here:

http://oldeuropeanculture.blogspot.ie/2014/10/brajan-rajan-kola-deda.html