Horatio Gordon Robley ( 1840 - 1930 ) was a British painter. Horatio Gordon Robley s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 7371.91 USD for The South Gate of Arawa's Pa at Matata in 2008 to 8249.85 USD for Tu Ngarahu in 2011 , based on the size and medium of the artwork.