Princess Antoinette Ernestine Amalie of Saxe-Coburg-Saalfeld was a German princess of the House of Wettin. By marriage, she was a Duchess of Württemberg. Through her eldest surviving son, she is the ancestress of today's House of Württemberg. Wikipedia
Born: August 28, 1779, Coburg, Germany
Died: March 14, 1824 (age 44 years), Saint Petersburg, Russia
Grandchildren: Duke Philipp of Württemberg and Alexandra von Keudell
Siblings: Ernest I, Duke of Saxe-Coburg and Gotha
Spouse: Duke Alexander of Württemberg (m. 1798–1824)