Who is Mary, Crown Princess of Denmark's mother-in-law?
Frederik, Crown Prince of Denmark Frederik, Crown Prince of Denmark, Count of Monpezat, {'1': ", '2': ", '3': 'RE, SKmd', '4': "} (Frederik André Henrik Christian; born 26 May 1968) is the heir apparent to the throne of Denmark. Frederik is the elder son of Queen Margrethe II and Henrik, the Prince Consort.
Princess Ingeborg of Denmark Princess Ingeborg of Denmark ("Ingeborg Charlotte Caroline Frederikke Louise"; 2 August 1878 – 12 March 1958), was a Princess of Sweden by marriage to Prince Carl, Duke of Västergötland. She was the daughter of Frederick VIII of Denmark, and the maternal grandmother of Harald V of Norway, Baudouin and Albert II of Belgium, and the female line great grandmother of Henri of Luxembourg.