Who created "Portrait of Louis XVIII"?

Portrait of Louis XVIII was created by Gaspard Grégoire|baron François Gérard in early 19th century.

When was "Portrait of Louis XVIII" created?

This artwork was created early 19th century.

Yes, Portrait of Louis XVIII is in the public domain and available for free download under CC0 license.

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Gaspard Grégoire|baron François Gérard, early 19th century