Jean Ignace Isidore Gerard ( 1803 - 1847 ) was a French painter. Jean Ignace Isidore Gerard s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 1096.96 USD for A greyhound in bonnet and shawl in 2004 to 4435.22 USD for Homme effrayé par trois crapauds géants in 2008 , based on the size and medium of the artwork.