Hello my name is***** am one of the expert appraisers here at justanswer. I would be happy to help you. Andre Giroux (born 1801 -died 1879) He was active and lived in France, was known for painting. His prices on oil paintings roughly 12 x 15" sold 350-675 and larger ones sold for 1800-2500.00 43 x 56" so the prices vary as do his sizes of paintings. These are roughly a range. Do you have a specific painting or size you are looking at for a value?