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.
Margaret Sambiria Margaret Sambiria, in Danish: "Margrethe Sambiria" or "Sambirsdatter," (1230?–1282) was the Queen consort of Christopher I of Denmark, and acted as regent for Eric V of Denmark. In Danish she is also known as queen "Margrethe Sprænghest".