Jane Morris was swept into the Pre-Raphaelite world at age eighteen. She was La Belle Iseult to William Morris, who declared “I cannot paint you; but I love you”. Then she was Pandora, Mnemosyne, Astarte Syriaca and other assorted goddesses to Dante Gabriel Rossetti. Years later, after the Pre-Raphaelite bloom had faded from her cheeks, we see Jane on canvas again in Evelyn De Morgan’s The Hour Glass (above). Her…