Who created "Portrait of Lieutenant-General Frederik Knotzer"?

Portrait of Lieutenant-General Frederik Knotzer was created by Jan Willem Pieneman in c. 1832.

What medium is "Portrait of Lieutenant-General Frederik Knotzer"?

Portrait of Lieutenant-General Frederik Knotzer is oil on canvas.

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This artwork was created c. 1832.

Jan Willem Pieneman, c. 1832