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.
Louise of Mecklenburg-Güstrow Louise of Mecklenburg-Güstrow (28 August 1667 – 15 March 1721) was Queen consort of Denmark and Norway as the first spouse of the King Frederick IV of Denmark.