Henri Rousseau ( 1844 - 1910 ) was a French painter. Henri Rousseau s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 2816.33 USD for Caïd à cheval in 2005 to a remarkable record 2882500 USD for Heureux quator in 2009 , based on the size and medium of the artwork.