A view of Richmond, painted more than a century ago, raised more than £1,500 at a Sotheby's auction in London.
A dealer from Suffolk paid £1,527 for the work by Edmund Niemann.
Niemann and his son, Edward, were famed for their Yorkshire landscapes in the 19th Century.
The similarity between their work has often led to debate as to which artist should be credited with the work, which shows the River Swale.
But experts were confident the oil painting showing Richmond Castle, which had a reserve price of between £1,200 and £1,800, was the work of Edmund Niemann, who died in 1876.
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