Frederick Williamson ( 1835 - 1900 ) was a British painter. Frederick Williamson s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 475.14 USD for Cattle and sheep resting on a hillside in 2003 to 1786.4 USD for The banks of the Tagus, Portugal in 2011 , based on the size and medium of the artwork.