Duchess Marie Antoinette of Mecklenburg-Schwerin, also Manette (Marie Antoinette Margarethe Mathilde; 28 May 1884 – 26 October 1944) was the Duchess of Mecklenburg-Schwerin by birth and potential bride for King Alfonso XIII of Spain.

[1] She had a difficult relationship with her cousin Frederick Francis IV, Grand Duke of Mecklenburg, who regularly had to amortize her debts.

So, Marie Antoinette regularly had to sell archaeological artifacts belonging to her mother, excavated in Austria and Carniola, including Hallstatt Archaeological Site in Vače.

During World War I from 1914 to 1918 they both served in several military hospitals as red cross ladies.

She was German Kaiser Wilhelm II's candidate for a bride for King Alfonso XIII of Spain although he would marry the Kaiser's maternal first cousin, Princess Victoria Eugenie, niece of British King Edward VII.