Hippolyte Francois Leon Duluard ( 1871 - 1924 ) was a French painter. Hippolyte Francois Leon Duluard s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 1200 USD for LE CAVALIER in 2005 to 6613.01 USD for Portrait of a cavalier in 2017 , based on the size and medium of the artwork.