People Paul of Greece King of Greece from 1947 to 196414 December 1901 – 6 March 1964 Constantine I of Greece2 August 1868 – 11 January 1923Sophia of Prussia14 June 1870 – 13 January 1932 Paul of Greece14 December 1901 – 6 March 1964Frederica of Hanover18 April 1917 – 6 February 1981 Queen Sofía of Spainborn 1938Constantine II of Greece2 June 1940 – 10 January 2023Princess Irene of Greece and Denmark11 May 1942 – 15 January 2026 ParentsConstantine I of Greece2 August 1868 – 11 January 1923Sophia of Prussia14 June 1870 – 13 January 1932Spouses and partnersFrederica of Hanover18 April 1917 – 6 February 1981SiblingsGeorge II of Greece19 July 1890 – 1 April 1947Alexander of Greece1 August 1893 – 25 October 1920Helen of Greece and Denmark2 May 1896 – 28 November 1982Princess Irene, Duchess of Aosta13 February 1904 – 15 April 1974Princess Katherine of Greece and Denmark4 May 1913 – 2 October 2007ChildrenQueen Sofía of Spainborn 1938Constantine II of Greece2 June 1940 – 10 January 2023Princess Irene of Greece and Denmark11 May 1942 – 15 January 2026 From Wikipedia and Wikidata (public domain), updated daily.