Léon Georges Calves ( 1848 - 1923 ) was a French painter. Léon Georges Calves s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 1725 USD for WOMAN TENDING COWS IN A FARMYARD in 2004 to 3585 USD for Watching the Herd in 2006 , based on the size and medium of the artwork.