Family: Oscar John Knapp / Olive May Arehart (F6453)
m. Abt 1918Lawrence Knapp (1861-1912) 
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Emma M. Wise (1865-1944)
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| Augusta C. Knapp (1885-1953) |
Jennie M. Knapp (1888-1961)  |
| Alice Elizabeth Knapp (1891-1960) |
| Robert John Knapp (1899-1934) |
| Vernon L. Knapp (1901-1986) |
| Oscar John Knapp (1893-1959)
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| Olive May Arehart (1900-1990)
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| Leroy Urban Knapp (1918-1965) |
| Edna E. Knapp (1919-2004) |
| William Robb Knapp (1921-1940) |
| Dorothy Emma Knapp (1923-1998) |
| Alice Rose Knapp (1925-2013) |
| Mary Jane Knapp (1926-2013) |
| John Lawrence Knapp (1928-1998) |