In Madrid on 22 September 1976, Maria married Prince Franz Wilhelm of Prussia, a Hohenzollern great-grandson of Germany's last emperor Wilhelm II and a great-great-great grandchild of Victoria, Queen of the United Kingdom.
In Madrid on 22 September 1976, Maria married Prince Franz Wilhelm of Prussia, her third cousin, once-removed. He is a Hohenzollern great-grandson of Germany's last emperor Wilhelm II and a great-great-great grandchild of Victoria, Queen of the United Kingdom.