Norbert Joseph Carl Grund ( 1717 - 1767 ) was a German painter. Norbert Joseph Carl Grund s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 3869.62 USD for Fischerboote am Ufer in 2007 to 11682.24 USD for Jakob und Rahel am Brunnen in 2015 , based on the size and medium of the artwork.