Helen Suzette Crowninshield was born 28 July 1868 in Paris, France to Frederic Crowninshield (1845-1918) and Helen Suzette Fairbanks (1841-1921) and died 14 June 1941 Manhattan, New York, United States of unspecified causes. She married Carl August de Gersdorff (1865-1944) 28 September 1895 .
Children
| Name | Birth | Death | Joined with |
| Josephine de Gersdorff (1896-1975) | 18 June 1896 Manhattan, New York, United States | 15 October 1975 Beverly, Essex County, Massachusetts, United States | Frederick Josiah Bradlee, Jr. (1892-1970) |
| Alma de Gersdorff (1897-) | |||
| Caspar de Gersdorff (1901-) | |||
Footnotes (including sources)
| ‡ General |
| Ω Birth |
| ₪ Wedding |
| ¶ Death |