Olga Constantinovna …, daughter of Constantine Nikolaievitch Of_russia … and Elizabeth Alexandra Of_saxe- …, was born in 1851 and died in 1926 at the age of 75. She married William George_i Of_the_hellenes Oldenburg, son of Christian_ix … and Louise Of_hesse-Cassel …, in 1867. He was born on December 24, 1845 in Copenhagen, Denmark and died on March 18, 1913 in Salonika at the age of 67.

Constantine_i Oldenburg, son of William George_i Of_the_hellenes Oldenburg and Olga Constantinovna …, was born on August 2, 1868 in Athens, Greece and died on January 11, 1923 in Palermo, Italy at the age of 54. He married Sophie Of_prussia …, daughter of Frederick_iii … and Victoria Adelaide Mary ….

George Oldenburg, son of William George_i Of_the_hellenes Oldenburg and Olga Constantinovna …, was born in 1869 and died in 1957 at the age of 88. He married Mary …, daughter of Roland Bonaparte.

Alexandra Of_greece …, daughter of William George_i Of_the_hellenes Oldenburg and Olga Constantinovna …, was born in 1870 and died in 1891 at the age of 21. She married Paul Alexandrovich Romanov, son of Alexander_ii Nicholoevich Romanov and Marie Of_hesse- Darmstadt …, in 1889. He was born in 1860 and died in January 1919 in Fortress Of, Peter And Paul, , Russia at the age of 59.

Nicholas Of_greece …, son of William George_i Of_the_hellenes Oldenburg and Olga Constantinovna …, was born in 1872 and died in 1938 at the age of 66. He married Helen Vladimirovna Of_russia Romanov, daughter of Vladimir Romanov and Marie Pavlovna.

Mary …, daughter of William George_i Of_the_hellenes Oldenburg and Olga Constantinovna …, was born in 1876 and died in 1940 at the age of 64. She married 2 times. The first time she married George Romanov, son of Michael Romanov and Cecily (Olga) …, in 1900. He was born in 1863 and died in 1919 at the age of 56. The second time she married Perikles Joannides … in 1922. He was born in 1881 and died in 1965 at the age of 84.

Andrew Of_greece …, son of William George_i Of_the_hellenes Oldenburg and Olga Constantinovna …, was born in 1882 and died in 1944 at the age of 62. He married Alice Of_battenberg …, daughter of Louis Of_battenberg … and Victoria Alberta Of_hesse ….

Christopher Oldenburg, son of William George_i Of_the_hellenes Oldenburg and Olga Constantinovna …, was born in 1888 and died in 1940 at the age of 52. He married 2 times. The first time he married Anastasia Stewart. The second time he married Francis Of_guise … in 1929. She was born in 1902 and died in 1953 at the age of 51.

George_ii Oldenburg, son of Constantine_i Oldenburg and Sophie Of_prussia …, was born on July 19, 1890 in Tatoi, Near Athens, Greece and died on April 1, 1947 in Athens, Greece at the age of 56. He married Elizabeth Of_romania Hohenzollern, daughter of Ferdinand_i Of_hohenzollern- Sigmaringen Hohenzollern and Marie Of_saxe-Coburg And_gotha …, on February 27, 1921 in Bucharest, Romania. She was born on October 12, 1894 in Pelesch and died on November 14, 1956 in Cannes, France at the age of 62. George_ii Oldenburg and Elizabeth Of_romania Hohenzollern were divorced.

Alexander_i Oldenburg, son of Constantine_i Oldenburg and Sophie Of_prussia …, was born on August 1, 1893 in Tatoi and died on October 25, 1920 in Athens, Greece at the age of 27. He married Aspasia Manos, daughter of Petros Manos and Maria Argyropoulos.

Helen Of_greece …, daughter of Constantine_i Oldenburg and Sophie Of_prussia …, was born on May 2, 1896 in Athens, Greece and died on November 28, 1982 in Lausanne, Switzerland at the age of 86. She married Carol_ii Hohenzollern, son of Ferdinand_i Of_hohenzollern- Sigmaringen Hohenzollern and Marie Of_saxe-Coburg And_gotha ….

Paul_i Oldenburg, son of Constantine_i Oldenburg and Sophie Of_prussia …, was born on December 14, 1901 in Athens, Greece and died on March 6, 1964 in Tatoi, Near Athens, Greece at the age of 62. He married Frederica Of_hanover Hanover, daughter of Ernest Augustus Of_brunswick Hanover and Victoria Louise Of_prussia ….

Peter Oldenburg, son of George Oldenburg and Mary …, was born in 1908 and died in 1980 at the age of 72.

Maria Pavlovna Romanov, daughter of Paul Alexandrovich Romanov and Alexandra Of_greece …, was born in 1890 and died in 1958 at the age of 68. She married William …, son of Gustav_v … and Victoria Of_baden ….

Dmitri Pavlovich Romanov, son of Paul Alexandrovich Romanov and Alexandra Of_greece …, was born in 1891 and died in 1941 in Switzerland at the age of 50.

Marina Of_greece …, daughter of Nicholas Of_greece … and Helen Vladimirovna Of_russia Romanov, was born on November 30, 1906 in Athens, Greece and died in 1968 in Kensington, Palace, , England at the age of 61. She married George Edward Alexander Windsor, son of George_v Windsor and Mary_of_teck (May) ….

Margarita Mountbatten, daughter of Andrew Of_greece … and Alice Of_battenberg …, was born in 1905 and died in 1981 at the age of 76. She married Gottfried Of_hohenlohe- Lagenburg ….

Theodora Mountbatten, daughter of Andrew Of_greece … and Alice Of_battenberg …, was born in 1906 and died in 1960 at the age of 54. She married Berthold Of_baden ….

Cecilie Of_greece Mountbatten, daughter of Andrew Of_greece … and Alice Of_battenberg …, was born in 1911 and died in 1937 at the age of 26. She married George Donatus Of_hesse …, son of Ernest Louis Of_hesse … and Eleonore Of_solms- Hohensolms-Lich …, in 1931. He was born in 1906 and died in 1937 at the age of 31.