| 1. | John Francis Derby was born on 6 Dec 1916 in Brooklyn, New York, United States; died on 5 Sep 2004 in Bellport, Brookhaven, Suffolk, New York, United States. Family/Spouse: Helen Margaret Geiger. Helen (daughter of George Valentine Geiger and Helen F Mackey) was born in 1925; died in 2009 in Bellport, Brookhaven, Suffolk, New York, United States. [Group Sheet] [Family Chart]
Children:
- 2. Dennis Derby
 was born about 1940; died before 2024 in Bellport, Brookhaven, Suffolk, New York, United States.
- 3. Thomas Francis Derby was born on 6 Feb 1948; died on 24 Nov 2021 in Bellport, Brookhaven Town, Suffolk, New York, United States; was buried in Bellport, Suffolk County, New York, United States of America.
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1916 - 2004 (87 years)