| Children |
| | 1. James Thewlis, b. Oct-Dec 1904, Leeds, , Yorkshire, England d. Oct-Dec 1904, Leeds, , Yorkshire, England (Age 0 years) |
| | 2. Hilda Thewlis, b. 26 Jul 1905, Leeds, , Yorkshire, England d. Aug 1998, Huddersfield, , Yorkshire, England (Age 93 years) |
| | 3. James Thewlis, b. Apr-Jun 1908, Leeds, , Yorkshire, England d. Apr-Jun 1908, Leeds, , Yorkshire, England (Age 0 years) |
| | 4. Clara Thewlis, b. Jan-Mar 1909, Leeds, , Yorkshire, England d. Jul-Sep 1909, Leeds, , Yorkshire, England (Age 0 years) |
| | 5. Walter Thewlis, b. 22 Aug 1910, Leeds, , Yorkshire, England d. Oct-Dec 1970, Leeds, , Yorkshire, England (Age 60 years) |
| | 6. Doris Thewlis, b. Apr-Jun 1913, Leeds, , Yorkshire, England d. Yes, date unknown |
| | 7. Sidney Thewlis, b. Oct-Dec 1914, Leeds, , Yorkshire, England d. Oct-Dec 1916, Leeds, , Yorkshire, England (Age 2 years) |
| | 8. Albert Thewlis, b. Oct-Dec 1916, Leeds, , Yorkshire, England d. Oct-Dec 1916, Leeds, , Yorkshire, England (Age 0 years) |
| | 9. Herbert Thewlis, b. Oct-Dec 1917, Leeds, , Yorkshire, England d. Yes, date unknown |
| | 10. Evelyn Thewlis, b. Jul-Sep 1919, Leeds, , Yorkshire, England d. Yes, date unknown |
| | 11. Joan Thewlis, b. Apr-Jun 1922, Leeds, , Yorkshire, England d. 19 Jul 1939, Leeds, , Yorkshire, England (Age 17 years) |
| | 12. Leslie Thewlis, b. 30 Apr 1924, Leeds, , Yorkshire, England d. Jul 1999, Leeds, , Yorkshire, England (Age 75 years) |
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