Actual name of this person?

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Is this man's name actually "Sasha" as given here and in the Albanian language Wikipedia article or "Saša" as the name is given in articles in Czech, Croatian, Bosnian and Serbo-Croatian languages? \I doubt that anyone has two official names which are thus similar and yet not identical.

Can someone substanticate with primary or secondary sources?

Source

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Library of Congress Name Authority File no. 96003860, URI: http://id.loc.gov/authorities/names/no96003860