Josiah Slater ( 1785 - 1847 ) was a British painter. Josiah Slater s works have been put up for auction numerous times, with realized prices varying from 137.28 USD for Portrait of Lady Morgan of Tredegar House, with her daugher Miss Morgan, 1825 in 2009 to 139.41 USD for Portrait of three children in 2009 , based on the size and medium of the artwork.