Family: Johann Friedrich Wilhelm - William - Haselow / Friederike Wilhelmine - Fredericka - Staack (F25)
m. 25 Mar 1877Wilhelmine Auguste Henriette Minnie Haselow (1858-1900)  |
 | Friedrich Christian Staack (1819-1879) 
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 | Caroline Sophie Dorothee - Sophia - Fitzdam (1822-1896)
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 | Christian Wilhelm William Staack (1846-1894) |
 | Friederike Marie Johanne - Mary - Staack (1848-1929) |
 | Wilhelmine Caroline Friederike Lena Staack (1852-1915) |
 | Sophie Marie Christine Staack (1853- ) |
 | Carl Heinrich Joachim Charles Staack (1857- ) |
 | Rudolph Carl Ludwig Staack (1859-1928) |
 | Bertha Friederike Henriette Staack (1861-1929) |
 | Friedrich Gustav Carl Fred Fritz Staack (1865-1935) |
| Johann Friedrich Wilhelm - William - Haselow (1847-1899)
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 | Friederike Wilhelmine - Fredericka - Staack (1855-1920)
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 | Wilhelm Hermann William Herman Haselow (1879-1946) |
| Friedrich Frederick Fred John Haselow (1882-1952) |
| Anna Haselow (1886- ) |
| Gustav Haselow (1888- ) |
 | Wilhelmine Minnie Haselow (1893-1931) |