Who is Mary, Crown Princess of Denmark's mother-in-law?
Mary, Crown Princess of Denmark Mary, Crown Princess of Denmark, Countess of Monpezat, {'1': ", '2': ", '3': 'R.E.', '4': "} (Mary Elizabeth; "née" Donaldson; born 5 February 1972) is the wife of Frederik, Crown Prince of Denmark. Frederik is the heir apparent to the throne, which means that should Frederik succeed, she will automatically become Queen of Denmark.
Princess Sophie of the Netherlands Princess Sophie of the Netherlands (Wilhelmine Marie Sophie Louise; 8 April 1824 – 23 March 1897) was the only daughter and last surviving child of King William II of the Netherlands and of his wife Grand Duchess Anna Pavlovna of Russia. She was heir presumptive to her niece, Queen Wilhelmina of the Netherlands, for seven years, from the death of her brother until her own death.