Children |
| 1. Rollin Hugh Sinclair, b. 9 Jun 1898, Minnesota, United States d. Yes, date unknown |
| 2. Merwin Ellsworth Sinclair, b. 6 Apr 1901, Minnesota, United States d. 17 Oct 1952, San Mateo, California, United States (Age 51 years) |
| 3. Gordon M. Sinclair, b. 1904, Iowa, United States d. 12 Jan 1927, San Francisco, San Francisco, California, United States (Age 23 years) |
| 4. Doris Sinclair, b. 1905, Iowa, United States d. Yes, date unknown |
| 5. Ruth Sinclair, b. 4 Oct 1907, Iowa, United States d. 25 Nov 1951, Los Angeles, Los Angeles, California, United States (Age 44 years) |
|