Which royal family is Princess Isabella a member of?

Princess Isabella of Denmark, Countess of Monpezat (Isabella Henrietta Ingrid Margrethe; born 21 April 2007) is a member of the Danish royal family. She is the second child and elder daughter of Crown Prince Frederik and Crown Princess Mary.

She is the fourth grandchild and oldest granddaughter of Queen Margrethe II and her husband, the late Prince Henrik. She is third in the line of succession to the Danish throne, after her father and her older brother, Prince Christian.

Isabella is styled as Her Royal Highness Princess Isabella of Denmark, Countess of Monpezat. She has been Princess of Denmark since birth and Countess of Monpezat since 29 April 2008, when Queen Margrethe granted the title to her male-line descendants.

On 20 December 2007, as he had done the previous year for Prince Christian, Per Stig Møller, Denmark's Minister for Foreign Affairs, formally wrote and signed a hand-written document confirming Isabella's position as third in the line of succession to the Danish throne. The princess's full name, dates of birth and christening, and the names of her godparents were recorded as dictated by the Royal Law of 1799.