John Kyffin Williams ( 1918 - 2006 ) was a painter. John Kyffin Williams s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 212.78 USD for Portrait of a Farmer with Cap Page Size in 2013 to 18416.21 USD for Pentrepella in 2013 , based on the size and medium of the artwork.