 On 28 October 1808, Anna gave birth to an illegitimate son, named Eduard Edgar Schmidt-Löwe.The father of this child may have been Jules Gabriel Émile de Seigneux, a minor French nobleman and officer in the Prussian army.Eduard was ennobled by his mother's younger brother, Ernst I, Duke of Saxe-Coburg and Gotha, and assumed the surname "von Löwenfels" by decree on 18 February 1818.