Here is some new information:
Maria Anna's wedding is going to take place at Tegernsee this summer. Just like her sisters Sophie, Marie Caroline and Elizabeth, Anna decided to marry at the church St. Quirinus, Tegernsee. (By the way: Empress Elisabeth of Austria's parents married in this church, too.)
Dr. Claus Runow is 39 years old and he works at the Citibank in London. After Dr. Terberger, Duchess Elizabeth's husband, he is the second common man who is to marry a Bavarian Princess.
I'm really curious about Anna's wedding dress. I'm sure that she will look absolutely beautiful.