Knud Geelmuyden Bull ( 1811 - 1889 ) was a Norwegian painter. Knud Geelmuyden Bull s works have been put up for auction numerous times, with realized prices varying from 4042.92 USD for Portrett av en ung offiser 1840 in 2004 to 5789.14 USD for Portrait of a Lady in 2005 , based on the size and medium of the artwork.