Mary Elizabeth Donaldson was born in Queen Alexandria Hospital for Women in Hobart, Tasmania. She is the youngest daughter of John Dalgleish Donaldson, a professor of applied mathematics, and Henrietta Clark Donaldson. Her parents were Scots. She has two sisters and one brother. She graduated from University of Tasmania in 1994 with a bachelor's degree in Commerce and Law.
On May 14, 2004, Mary and Crown Prince Frederik of Denmark were married in Copenhagen Cathedral. They have four children: Prince Christian, Princess Isabella, Prince Vincent, and Princess Josephine. The Crown Prince Couple live both in Frederik VIII’s Palace at Amalienborg and in the Chancellery House at Fredensborg Palace.
Titles and styles
5 February 1972 - 14 May 2004: Miss Mary Elizabeth Donaldson