"one was by G. F. Watts"

 George Frederic Watts (1817 - 1904), was an English sculptor, symbolist, portraitist, and landscape painter. He was renowned for being an artistic innovator, and gained the nickname ‘England’s Michelangelo.’ He was at one time married to the actress Ellen Terry.

For further information about Watts, see the website of the Watts Gallery. The Tate Collection also hosts a large collection of Watts's art, as does the National Portrait Gallery, and much of it can be viewed online.