Prosper De Troyer ( 1880 - 1961 ) was a Belgian painter. Prosper De Troyer s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 123.84 USD for Farmer. in 2004 to 1609.66 USD for Jeune femme au chapeau in 2006 , based on the size and medium of the artwork.