Dictionary of National Biography, 1885-1900/Ralph, George Keith
RALPH, GEORGE KEITH (fl. 1778–1796), portrait-painter, was an exhibitor at the Royal Academy from 1778 to 1796. His portraits include one of Lady Mary Bertie in 1788, and one of Mr. King, master of the ceremonies at Bath, in 1790. In 1794 he was appointed portrait-painter to the Duke of Clarence, and exhibited for the last time in 1796. Ralph appears to have obtained considerable employment in the provinces, notably in the eastern counties. His portraits are well and straightforwardly painted, but lack distinction.
[Redgrave's Dict. of Artists; Royal Academy Catalogues; information from G. Milner-Gibson-Cullum, esq., F.S.A.]