John Warwick Smith ( 1749 - 1831 ) was a British painter. John Warwick Smith s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 1045.57 USD for Loughor sands, Gower in 2002 to 19337 USD for Tintern Abbey by moonlight in 2003 , based on the size and medium of the artwork.