| 1. Willis Allen Otto |
 |
| B: |
28 Nov 1926 |
| P: |
Davenport, Scott County, Iowa, USA |
| D: |
12 Apr 1986 |
| P: |
|
|
| 2. Willis Leo Otto |
|
| B: |
25 Mar 1899 |
| P: |
Illinois, USA |
| M: |
26 Sep 1925 |
| P: |
Ohio, USA |
| D: |
0May 1971 |
| P: |
Dexter, Washtenaw County, Michigan, USA |
|
| 4. Ludwig Leo Otto |
|
| B: |
2 May 1874 |
| P: |
Illinois, USA |
| M: |
17 Nov 1897 |
| P: |
Illinois, USA |
| D: |
17 Sep 1959 |
| P: |
Cambridge, Henry County, Illinois, USA |
|
| 8. Julius Emil Otto |
|
| B: |
16 Jun 1847 |
| P: |
Pommern |
| M: |
4 Oct 1870 |
| P: |
Illinois, USA |
| D: |
26 Aug 1933 |
| P: |
Preemption, Mercer County, Illinois, USA |
|
1926 - 1986 (59 years)