Sophia Dorothea of Schleswig-Holstein-Sonderburg-Glücksburg: 28. Francis I, Duke of Saxe-Lauenburg: 14. Francis II, Duke of Saxe-Lauenburg: 29. Sibylle of Saxony: 7. Sophia Hedwig of Saxe-Lauenburg: 30. Julius, Duke of Brunswick-Lüneburg: 15. Maria of Brunswick-Lüneburg: 31. Hedwig of Brandenburg
As her mother was regent of Auguste's native Baden-Baden, it was her mother who tried to find a suitable candidate for her only daughter. Her mother proposed two candidates; Prince Alexander Ferdinand of Thurn and Taxis, son and heir of Anselm Franz of Thurn and Taxis, a wealthy German noble of the powerful Thurn und Taxis family and the Postmaster General of the Holy Roman Empire.