Nikolai of Denmark, Count of Monpezat (Nikolai William Alexander Frederik; born 28 August 1999) is a member of the Danish royal family.He is the eldest son of Prince Joachim and his first wife, Alexandra, Countess of Frederiksborg.
Prince Valdemar of Denmark (27 October 1858 – 14 January 1939) was a member of the Danish royal family. He was the third son and youngest child of Christian IX of Denmark and Louise of Hesse-Kassel. He had a lifelong naval career. He was paternal uncle of Prince Andrew of Greece and Denmark, father of Prince Philip, Duke of Edinburgh