Gerard Jozef Portielje ( 1856 - 1929 ) was a Belgian painter. Gerard Jozef Portielje s works have been put up for auction numerous times, with realized prices varying from 7378.11 USD for Interi√∏r med sittende mann in 2004 to 58610.32 USD for The cheat in 2005 , based on the size and medium of the artwork.