Ronald Ossory Dunlop ( 1894 - 1973 ) was a painter. Ronald Ossory Dunlop s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 373.1 USD for Ships in an estuary in 2002 to 5605.94 USD for THAMES BACKWATER in 2004 , based on the size and medium of the artwork.