Family: John Louis Helbock / Alice M. Yerdon (F16484)
m. 6 Feb 1932
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 | Norman Yerdon (1875-1955)
|
 | Edith Alzina Giddings (1887-1988) |
| Iva Nellie Yerdon (1906-1984)  |
| Elwin Edward Yerdon (1909-1987) |
| Aline Mae Yerdon (1911-1997) |
| George Abraham Yerdon (1913-1998) |
| Cedric Donald Yerdon (1921-1964) |
| John Louis Helbock (1902-1968) |
| Alice M. Yerdon (1908-1992)
|
| Norman Douglas Helbock (1932-2013) |