Queen Margrethe II is the mother of Mary, Crown Princess of Denmark's husband.
Mary, Crown Princess of Denmark, Countess of Monpezat, {'1': ", '2': ", '3': 'R.E.', '4': "} (Mary Elizabeth; "ne" Donaldson; born 5 February 1972) is the wife of Frederik, Crown Prince of Denmark. 
 Frederik is the elder son of Queen Margrethe II and Henrik, the Prince Consort. 
