| Role | Name | Birth | Death | Sex |
|---|---|---|---|---|
| Father | Constantine_I Oldenburg | 2 AUG 1868 | 11 JAN 1923 | Male |
| Mother | Sophie of_Prussia | 14 JUN 1870 | 13 JAN 1932 | Female |
| Child | George_II Oldenburg | 19 JUL 1890 | 1 APR 1947 | Male |
| Child | Alexander_I Oldenburg | 1 AUG 1893 | 25 OCT 1920 | Male |
| Child | Helen of_Greece | 2 MAY 1896 | 28 NOV 1982 | Female |
| Child | Paul_I Oldenburg | 14 DEC 1901 | 6 MAR 1964 | Male |
| Child | Child_5 | Alive | Male | |
| Child | Child_6 | 1913 | Alive | Male |