John B Jackson ( 1778 - 1831 ) was a British painter. John B Jackson s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 1851.85 USD for PORTRAIT OF SIR JOSHUA REYNOLDS in 2003 to 8873.46 USD for PORTRAIT OF ANTONIO CANOVA (1757-1822) in 2003 , based on the size and medium of the artwork.