Catherine Antonovna of Brunswick

Catherine Antonovna of Brunswick-Lüneburg was the daughter of Duke Anthony Ulrich of Brunswick and Grand Duchess Anna Leopoldovna of Russia and sister of Ivan VI. She was imprisoned by Empress Elizabeth of Russia along with her family from 1742 to 1780 at Kholmogory, and in 1780, she and two brothers and a sister were placed under house arrest for the rest of their lives in Horsens. She was the last descendant of Ivan V of Russia.