Back row, left to right: Crown Prince Frederik (later King Frederik VIII of Denmark), Prince Christian (later King Christian X of Denmark), and Prince Carl (in 1905 elected king of Norway under the name of Haakon VII). Front row, left to right: Princess Ingeborg, Princess Louise, Princess Thyra, Crown Princess Lovisa, and Prince Harald. Photo by anonymous (c. 1885). PD- Author’s life plus 70 years or fewer. Wikimedia Commons.