Complex sentence: Princess Isabella of Denmark, Countess of Monpezat (Isabella Henrietta Ingrid Margrethe; born 21 April 2007), is the elder daughter of Crown Prince Frederik and his wife, the Australian-born Crown Princess Mary.
Split into simpler sentences: 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 elder daughter of Crown Prince Frederik and his wife, the Australian-born Crown Princess Mary.