♂ Christopher Oldenburg

• William George_I of_the_Hellenes Oldenburg (1845)
• Olga Constantinovna (1851)

Marriage 1920-01-01

• Michael Oldenburg (1939)

Marriage 1929-01-01

• Andrew of_Greece (1882)
• Alexandra of_Greece (1870)
• Nicholas of_Greece (1872)
• Constantine_I Oldenburg (1868)
• George Oldenburg (1869)
• Olga
• Mary (1876)