She was the eighth and youngest child and fourth daughter of Crown Prince Frederick of Denmark and his wife Louise of Sweden. Her father was the eldest son of King Christian IX of Denmark and Louise of Hesse-Kassel, and her mother was the only daughter of King Charles XV of Sweden and Norway and Louise of the Netherlands. She was baptised with the names Dagmar Louise Elisabeth and was known as Princess Dagmar, named after her paternal aunt, Empress Maria Feodorovna of Russia, who was born Princess Dagmar of Denmark.Carl SONNE (1845-1919) was a Danish Photographer who was the royal court photographer for the Danish, Swedish and Norwegian courts.