Family: Clark Otis Blackstone / Mary Margaret Heil (F25905)
m. 7 May 1901Peter Heil (1846-1886) 
|
Mary Kress (1849-1911) |
| Clark Otis Blackstone (1874-1942) |
| Mary Margaret Heil (1884-1959)
|
Marilla Catherine Blackstone (1902-1988)  |
| Anna Pauline Blackstone (1904-1966) |
| Wilber Francis Blackstone (1906- ) |
| John Leroy Blackstone (1908-1975) |
| Paul Leo Blackstone (1919-1998) |