Alexander Galloway ( 1794 - 1812 ) was a painter. Alexander Galloway s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 416.25 USD for Portrait of George James Campbell of Treesbank in 2004 to 5719.16 USD for Richard Brinsley Sheridan in 2007 , based on the size and medium of the artwork.