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The way this request is worded contains/implies several fallacies that might mislead a new editor and as such they must be pointed out. 

The statement ""It's not verified that it's still the person's proper name today"" implies, with zero reliable sources offered in support, that Dado Prso might have legally changed his first name. This is completely baseless. Not a single sources supports this claim/implication. On the other hand, numerous reliable sources state his first name to be Miladin.

Furthermore, the above claim about the statement Dado Prso's real name is Miladin being ""a Croatian/Serbian nationalist talking point"" is nothing but a claim by Joy that's by no means established fact. Originally, he claimed it's a 'Serbian nationalist talking point on Wikipedia' and 'thinly veiled political advocacy' (presumably also Serbian), but now in the request he changed it to 'Croatian/Serbian talking point'.  "