Otto JacobsAge: 15 years1880–1895
- Name
- Otto Jacobs
| Birth | estimated a gap of 25 years about 1880 25 24 |
| Birth of a sister | Hedwig Jacobs about 1882 (Age 2 years) |
| Birth of a brother | Max Jacobs about 1884 (Age 4 years) |
| Birth of a brother | Karl Jacobs about 1886 (Age 6 years) |
| Birth of a half-brother | Kurt Fischer December 9, 1890 (Age 10 years) |
| Death of a maternal grandmother | Maria Wilhelmine Eleonore Dorothea Große December 6, 1891 (Age 11 years) |
| Death | October 11, 1895 (Age 15 years) |
| Family with parents |
| father |
K. Jacobs Birth: estimated as equal to wife's birth year — about 1855 |
| mother |
Dorothea Elise Julie Wiederhold Birth: July 19, 1855 41 31 Death: October 30, 1918 |
| himself |
Otto Jacobs Birth: estimated a gap of 25 years — about 1880 25 24 Death: October 11, 1895 |
|
3 years younger sister |
Hedwig Jacobs Birth: estimated as close to sibling(s) — about 1882 27 26 |
|
3 years younger brother |
Max Jacobs Birth: name unclear, DoB estmated as near sibling(s) — about 1884 29 28 |
|
3 years younger brother |
Karl Jacobs Birth: estimated as close to sibling(s) — about 1886 31 30 |
| Mother’s family with n Fischer |
| step-father |
n Fischer Birth: estimated as equal to wife's birth year — about 1855 |
| mother |
Dorothea Elise Julie Wiederhold Birth: July 19, 1855 41 31 Death: October 30, 1918 |
| half-brother |
Kurt Fischer Birth: December 9, 1890 35 35 |