John Thirtle ( 1777 - 1839 ) was a British painter. John Thirtle s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 390.33 USD for A wooded river landscape with a herdsman and cattle in 2004 to 4765.43 USD for Portrait of John Sell Cotman, Mrs Edmund Miles and Ann Miles in the Miles family farmhouse, Felbrigg, Norfolk in 2006 , ba