Jean Theobald Jacus ( 1924 - ) is a French painter. Jean Theobald Jacus s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 400 USD for Untitled (1957 in 2005 to 541.4 USD for La caverne aux brigands, Forêt de Fontainebleau in 2011 , based on the size and medium of the artwork.