Here are 2 famous musicians from Russia died at 23:
Alexander Vasyunov (April 22, 1988 Yaroslavl-September 7, 2011 Yaroslavl) was a Russian personality.
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Ivan VI of Russia (August 23, 1740 Saint Petersburg-July 16, 1764 Shlisselburg) was a Russian personality.
He died as a result of murder.
Read more about Ivan VI of Russia on Wikipedia »