Johann Niedermann ( 1759 - 1833 ) was an Austrian painter. Johann Niedermann s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 369.41 USD for Damen- und Herrenbildnis in 2011 to 2179.12 USD for Portrait of a Gentleman and a Boy with Family Coat of Arms in 2013 , based on the size and medium of the artwork.