 1873 - 1944  (70 years)
 1873 - 1944  (70 years)| Bertha Louise Ross  1873-1944 | 
| Bertha Louise Ross | |
| B: | 6 Feb 1873 | 
| Berlin, Germany | |
| D: | 20 Jan 1944 | 
| Michigan | |
| Alexander Ruthven  1851-1905 | 
| Alexander Ruthven | |
| B: | 1851 | 
| M: | 1892 | 
| D: | 1905 | 
| Karl Charles Gerber  1859-1941 | 
| Karl Charles Gerber | |
| B: | 13 Apr 1859 | 
| Schangnau, Bern, Switzerland | |
| M: | 1907 | 
| D: | 19 Feb 1941 | 
| Michigan | |