The Two Gentleman of Verona Valentine Rescuing Sylvia from Proteus by William Holman Hunt, The City Museum and Art Gallery, Birmingham, England.
One of the original Pre-Raphaelites, Hunt takes his subject from a Shakespeare play. The PRB liked to get their subjects from literature and to paint out of doors in natural light. I'm sure the model for Sylvia Elizabeth Siddal, had sore knees.