1888 - 1977 (89 years)
| Robert L. Cobb, Jr. | |
| B: | 1914 |
| D: | Yes, date unknown |
| Mary Elizabeth Cobb | |
| B: | 1913 |
| D: | Yes, date unknown |
|
| Helen Dickerson | |
| B: | 29 Apr 1888 |
| Suffolk, New York, United States | |
| D: | 29 Sep 1977 |
| Robert Lillibridge Cobb | |
| B: | 13 Aug 1885 |
| Cedar Falls, Black Hawk, Iowa, United States | |
| M: | 20 Jun 1910 |
| Suffolk, New York, United States | |
| D: | 16 Mar 1954 |
| Minneapolis, Hennepin, Minnesota, United States | |
