Mary Mannin ( 1800 - 1864 ) was a British painter. Mary Mannin s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 66.71 USD for Portrait of the Second Baron Keane (1815-1882) in 2010 to 581.13 USD for Traditionally identified as a portrait of Charles Dickens as a young man, aged 16, head and shoulders, in a grey coat in 2013 , base