Thyra of Denmark1853 - 1933 Born Thu, 29 September 1853 Yellow Mansion, Copenhagen Died Sun, 26 February 1933 Gmunden Buried Gmunden Details Parents Princess Thyra Amalie Caroline Charlotte Anna Lived 79 years, 4 months, 28 days father Christian IX 1818 - 1906 mother Louise of Hesse-Kassel 1817 - 1898 Siblings Brother Frederick VIII 1843 - 1912 Sister Alexandra of Denmark 1844 - 1925 Brother George I 1845 - 1913 Sister Maria Feodorovna 1847 - 1928 Brother Valdemar of Denmark 1858 - 1939