Rainham Builders
Family: John Henry Helka / Ethel M. Martin (F5421)
m. 21 Dec 1910Lewis Helka (1841-1889) 
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Charlotte Yager (1841- )
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Dorothy Jane Helka (1868-1948)  |
| Annabell Helka (1872- ) |
| Josephus Helka (1873-1947) |
| Wellington Helka (1875- ) |
| Laura Helka (1878- ) |
| William Owen Helka (1880- ) |
| Norris Henry Martin (1867- )
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| Lettie May Swarts (1870- )
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| Lillian Mae Martin (1896-1974) |
| John Henry Helka (1883-1968)
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| Ethel M. Martin (1891-1966)
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| Harvey Ray Helka (1929-2010) |