Family: David Locke McCollister / Hedwig Duerk (F2938)
Johann Duerk (1851-1906) 
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Sophia Miller (1851-1934)
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| William Adam Duerk (1873-1929) |
| Edwin A Duerk (1875-1941) |
| John Duerk (1877-1951) |
Natalie Duerk (1884-1965)  |
| Lillian Duerk (1890-1891) |
| Walter Leo Duerk (1893-1966) |
| David Locke McCollister (1873-1932) |
| Hedwig Duerk (1881-1928)
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| Harriet McCollister (1918-1960) |