William Macgregor Paxton ( 1869 - 1941 ) was an American painter. William Macgregor Paxton s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 7637 USD for My Father, James Paxton in 2005 to 432000 USD for The Beach at Chatham in 2007 , based on the size and medium of the artwork.