William Adolphus Knell (attributed To) ( 1805 - 1875 ) was a British painter. William Adolphus Knell (attributed To) s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 117.2 USD for A tug to the rescue in 2004 to 602.84 USD for Masted ships and vessels in choppy waters in 2013 , based on the size and medium of the artwork.