Complex sentence: Prince Christian of Denmark, Count of Monpezat (Christian Valdemar Henri John; born 15 October 2005), is the elder son of Crown Prince Frederik and his wife, the Australian born Crown Princess Mary.
Split into simpler sentences: Prince Christian of Denmark, Count of Monpezat (Christian Valdemar Henri John; born 15 October 2005), is a member of the Danish Royal Family. He is the elder son of Crown Prince Frederik and his wife, the Australian born Crown Princess Mary.