William Frank Calderon aka W. Frank Calderon (London 1865 – 21 April 1943), was a British painter of portraits, landscapes, figure subjects and sporting pictures. He was the third son of the painter and Keeper of the Royal Academy in London, Philip Hermogenes Calderon and was married (in 1892) to Ethel Wells Armstead (b. 1864), third daughter of the noted sculptor Henry Hugh Armstead, RA.

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