Lionel Hamilton Renwick ( 1917 - 2003 ) was a British painter. Lionel Hamilton Renwick s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 289.75 USD for Sky Gypsy, a chestnut racehorse, a study in 2004 to 2254.55 USD for A RACEHORSE, WITH LESTER PIGGOTT UP in 2006 , based on the size and medium of the artwork.