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 | John Kovanda (1855- ) |
 | Barbara Sihlai (1860- ) |
| John Johan Lokker (1871-1958)
|
| Adrianna van Vessem (1876-1949)
|
| Oliver Nelson Lokker (1909-1988)  |
| Johannis Matthis Lokker (1894-1965) |
| Edward Kovanda (1892-1960)
|
| Wilhelmina J. Lokker (1898-1979)
|
