It´s strange the lack of portraits. The wedding between Berthier and Elisabeth was one of the goals of Napoleon, he was proud enough since I could marry one of his marshals with a princess. I always wondered how Elisabeth felt. Berthier was the most unhappy groom...he really loved his mistress, Mme Visconti. And after seven years of marriage, the strange death of Berthier made Elisabeth a widow. It´s a sad story.
In the Memoirs of Constant, I have found one reference to the duke, his duchess and their children, Pius (who fathered later duke Max) and Elisabeth. Constant says that
"[...] The Duchess must have been a very beautiful woman; she has a fine figure and a very noble air. Prince Pius, her son, is just at the most disadvantageous age, between childhood and youth. The Emperor [Napoleon, of course] has laughed a good deal at his little legs, which have all they can do to support his small body, overladen with orders and grand cordons. They made a droll little caricature of him. The princess Elisabeth is not pretty, but I think that if she were better dressed she would be well-shaped. She is very polite and very talkative, a thing which scandalizes Napoleon. At dinner she was placed between him and Eugène de Beauharnais: accustomed to her father´s little court , and to that of the Elector of Bavaria, she is simple enough not to be at all intimidated in speaking to Bonaparte" By the way, all that I have is a portrait of the wife of Duke Wilhelm, Maria Anna von Zweibrücken-Birkenfeld, sister of Maximilian Joseph, Elector and later first king of Bavaria. Maria Anna was, of course, the mother of Pius and Elisabeth:
