William (king Billy) Barak ( 1818 - 1903 ) was an Australian painter. William (king Billy) Barak s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 59250 USD for UNTITLED (CEREMONY) 1895 in 2004 to 624535.32 USD for CORROBOREE in 2009 , based on the size and medium of the artwork.