Jan Bjorn Willumsen ( 1891 - 1964 ) was a Danish painter. Jan Bjorn Willumsen s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 114.09 USD for Young girl in an evening dress in 2010 to 321.05 USD for Figures gathered outside a church, Spain in 2011 , based on the size and medium of the artwork.