Christina Robertson ( 1796 - 1854 ) was a British painter. Christina Robertson s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 338.93 USD for The Grand Duchess, Olga Nicholsiana in 2005 to 23218.11 USD for EMPRESS ALEXANDRA FEDOROVNA in 2010 , based on the size and medium of the artwork.