- Had 8 children: Christian (1870-1947), King Christian X, Carl (1872-1957), King Haakon VII of Norway, Louise (1875-1906), Harald (1876-1949), Ingeborg (1878-1958) , Thyra (1880-1945), Gustav (1887-1944), and Dagmar (1890-1961).
- Brother of Queen Alexandra, King George of Greece, Czarina Maria Fyodorovna, Prinsesse Thyra, and Prins Valdemar.
- Followed his father King Christian IX as King of Denmark in 1906.
- Father-in-law of Dronning Alexandrine.
- Grandfather of Frederik IX and Arveprins Knud. Great-grandfather of H.M. Queen Margrethe of Denmark, Queen Anne-Marie, and Prinsesse Benedikte. 2nd great-grandfather of Frederik X, Prins Joachim, Prins Gustav af Sayn-Wittgenstein-Berleburg, Prinsesse Alexandra af Sayn-Wittgenstein-Berleburg, Crown Prince of Greece Pavlos, Prince Nikolaos, and Theodora Greece. 3rd great-grandfather of Kronprins Christian, H.E. Greve Nikolai, and H.E. Greve Felix.
- His granddaughter, Princess Astrid Sophie Louise Bernadotte of Sweden, married King Leopold III. Through Astrid Sophie, Frederik is the great-grandfather of Grand Duchess Joséphine-Charlotte of Luxembourg, King Baudouin, and King Albert II, and the great-great-grandfather of Grand Duke Henri de Luxembourg, and King Philippe.
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