John Henry Hammaker
(Notes: You may have to scroll down or right to see chart.)
| Keith Hammaker | |
| B: | 7 Jun 1906 |
| Minnesota | |
| D: | Jun 1981 |
| Alice Marie Hammaker | |
| B: | 8 Apr 1910 |
| Montana | |
| D: | Nov 1983 |
| Oscar Franklin Hammaker | |
| B: | 19 Oct 1870 |
| Iowa | |
| D: | 30 Mar 1956 |
| Eugene, Lane County, Oregon | |
| Kathryn May Webb | |
| B: | 24 Apr 1874 |
| Mason County, Illinois | |
| D: | 24 Sep 1942 |
| Minnesota | |