Scotch painter, born in Edinburgh; he was an artist of great imaginative power, and excelled in the weird; his best picture, exhibited in 1828, was "The Hopes of Early Genius Dispelled by Death," though his first achievements in art were his illustrations of the "Ancient Mariner"; but his masterpiece is "Vasco da Gama encountering the Spirit of the Cape"; he was a sensitive man, and disappointment hastened his death (1806-1849).