It was only after their father's death that Elizabeth Christine of Brunswick-Wolfenbüttel gave the approval for the marriage, which was concluded in St Augustine's Church (Augustinerkirche) in Vienna on 7 January 1744.
Numai după decesul tatălui ei, Elizabeth Christine de Brunswick-Wolfenbüttel și-a dat acordul pentru căsătorie, care a avut loc la 7 ianuarie 1744 la Augustinerkirche.