Help identify the author of the picture

[marines]

Thank you all!
And I went to the St. Petersburg antique house, where they deliberated on the type of the Hermitage and decided that it Freret!
Here's what to do I do not know where else to apply, and how to identify the author .....
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[раскатов]

Has a portrait of how the work of French artist, or options?
 
For example, I read a Bogatsky (he was a portrait painter in the mid-19th century) or the possible options.

[marines]

Anything is possible .....
But it is known that the picture has been taken from Germany during and after the war.