George I of Greece sibling Frederik VIII of Denmark
Although he was of royal blood (his mother and father were both great-grandchildren of Frederick V of Denmark and great-great-grandchildren of George II of Great Britain) his family was relatively obscure and lived a comparatively normal life by royal standards. In 1853, however, George's father was designated the heir presumptive to the childless Frederick VII of Denmark, and the family became princes and princesses of Denmark. George's siblings were Frederick (who succeeded their father as King of Denmark, and whose first son was Christian X of Denmark and whose second son was elected as Haakon VII of Norway in 1905), Alexandra (who became wife of Edward VII of the United Kingdom and the mother of George V of the United Kingdom and Maud, queen consort of Haakon VII of Norway), Dagmar (who, as Empress Maria Feodorovna, was consort of Alexander III of Russia and the mother of Nicholas II), Thyra (who married Ernest Augustus, Crown Prince of Hanover) and Valdemar.George's mother tongue was Danish, with English as a second language. He was also taught French and German. He embarked on a career in the Royal Danish Navy, and enrolled as a naval cadet along with his elder brother Frederick. While Frederick was described as "quiet and extremely well-behaved", George was "lively and full of pranks".
brother or sister kin