Everyone knows that in the past, marriages between members of reigning dynasties were conceived solely to strengthen political alliances. In the process of preparing for trips to Europe, I often delve into books, and while reading biographies of princes, princes and emperors, I am amazed at how bizarre zigzags of European politics are. More than once I had a question: did the Romanovs and the Austrian Habsburgs enter into dynastic marriages? The first answer to this question I received, getting acquainted with the history of the tiny North German principality of Braunschweig-Wolfenbüttel. At the beginning of the 18th century, Russia and Austria, strengthening the alliance to fight Ottoman Turkey, became intermarried through two sisters, Elizabeth and Charlotte, the Princesses of Braunschweig-Wolfenbuttel. The eldest, Elizabeth, having passed from Lutheranism to Catholicism, became the wife of Archduke Charles, future emperor Charles 6. The younger, Charlotte, was married to the son of