The name of krobyz tribe living in old ages in Thrakia in my opinion may go back to kara-obi-uz , that is uz nation from near the river Black (?) Ob,
where the country of Ugra lies until this they.
Its name is given of Ar-Ger-Awa son of Ganda,king of kash - the Arés of grawiks - as Awa-Ger-a,where uger (uher) that is also awár nation speaking autochton ugrian languages takes its origin from.
Georgian people however may have rather come from Amazonia,while their language is perhaps distantly related to lithuanian and slavic - no wonder taking the large geographical distance - ,a language of levites sorted to some of the sons of A-Wa-Hayad-Daha.
Therefore grúz ethnonym for georgians and Grúz family name in my view may partly come from Ger-Awa-Awaz,meaning uz from Ugra.
Jews and christians call him Aari,Gad,Yehudah .
Balázs Déri