$ 0 0 Madame de Florian by Giovanni Boldini© Getty ImagesWho? Actress and socialite Marthe de Florian was famed for her captivating beauty, ever surrounded by swirling rumours that she was lover to numerous great men, including Georges Clemenceau, later prime minister of France and the painter Giovanni Boldini. The latter connection remained mere supposition until just three years ago, when a fascinating discovery was made.What? Florian resided in a breath-takin...