John Dowman ( 1750 - 1824 ) was a painter. John Dowman s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 982.04 USD for Portrait of John Mortlock of Cambridge (1755-1816), half length, in a black jacket and white stock in 2003 to 96000 USD for PORTRAIT OF HENRY FREDERICK BOUVERIE AND HIS SISTER in 2007 , based on the size and medi