Their eldest, Prince Christian, is 18 years old.
Princess Mary and Prince Frederik's love story
Danish Royals Speak Out on Prince Frederik Affair Rumors
Crown Princess Mary is now queen and her kids tell all - Mums At The Table
King Frederik and Queen Mary of Denmark's Children: All About
Insanely popular': Why are the Danish royals so important to Danes?
How does a woman from Hobart end up a Danish Queen? Everything you need to know about Mary, Australia news
Princess Mary's children: What their new royal life means
Queen Margrethe kept abrupt abdication secret from her sons Prince Joachim, Prince Frederik until 3 days before reveal: report
Princess Mary Denmark coronation: Aussie crowned Queen after Queen Margrethe II's abdication
Danish royal children to spend three months in Switzerland
How a bar room romance put a Scot on the throne of Denmark
Queen Mary and King Frederik's children: Everything to know about their four children, including Prince Christian
King Frederik and Queen Mary of Denmark's Children: All About Their 4 Kids
All About King Frederik and Queen Mary of Denmark's Royal Love Story
Facts About Prince Fredrick and Princess Mary of Denmark