Giovanni Battista Cavalieri ( 1525 - 1597 ) was an Italian painter. Giovanni Battista Cavalieri s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 798.53 USD for Ecclesia Militantis Triunfi in 2005 to 17212.36 USD for The Massacre of the Innocents (Le Blanc 7) in 2012 , based on the size and medium of the artwork.