John Francis Rigaud ( 1742 - 1810 ) was a British painter. John Francis Rigaud s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from USD for in to 84000 USD for Portrait of Lady Jane Mildmay, seated three-quarter-length, in a white silk dress playing the harp in 2005 , based on the size and medium of the artwork.