Family: John Joseph Duff / Nellie Elaine Keidel Locke (F153355)
Philipp Reisdorf (1860-1933) 
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Maria Peifer (1862- )
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| Ignatius Reisdorf (1891- ) |
| George Reisdorf (1895-1925) |
Anthony George Reisdorf (1898-1976)  |
| August Reisdorf (1905-1963) |
| John Joseph Duff (1893-1953)
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| John Joseph Duff (1931-1997) |
| Elaine M. Duff (1932-2017) |
| Thomas Edward Duff (1933-2015) |
| Philip James Duff (1934-1993) |
| Mary Ellen Duff (1935-2019) |