| Children |
| | 1. Joseph Siwiec, b. 4 Nov 1907, Pittston, Luzerne, Pennsylvania, United States d. 22 May 1908, Pittston, Luzerne, Pennsylvania, United States (Age 0 years) |
| | 2. Anna Siwiec, b. 24 Feb 1909, Pittston, Luzerne, Pennsylvania, United States d. 11 May 1909, Pittston, Luzerne, Pennsylvania, United States (Age 0 years) |
| | 3. Peter Siwiec, b. 10 Apr 1910, Dupont, Luzerne, Pennsylvania, United States d. Mar 1978, Manhattan, New York, New York, United States (Age 67 years) |
| | 4. Annie Siwiec, b. 14 Mar 1912, Dupont, Luzerne, Pennsylvania, United States d. 17 May 1912, Pittston, Luzerne, Pennsylvania, United States (Age 0 years) |
| | 5. Agnes Siwiec, b. 6 Feb 1913, Pittston, Luzerne, Pennsylvania, United States d. 7 Feb 1913, Pittston, Luzerne, Pennsylvania, United States (Age 0 years) |
| | 6. Eva Siwiec, b. Abt 1916, Pennsylvania, United States d. Yes, date unknown |
| | 7. Cassie Dorothy Siwiec, b. 1 Oct 1917, Dupont, Luzerne, Pennsylvania, United States d. 7 May 1993, Garfield, Bergen, New Jersey, United States (Age 75 years) |
| | 8. William Siwiec, b. Abt 1920, Luzerne, Pennsylvania, United States d. Yes, date unknown |
| | 9. Elizabeth Siwiec, b. Abt 1924, Pennsylvania, United States d. Yes, date unknown |
| | 10. Michael Siwiec, b. 1925, Dupont, Luzerne, Pennsylvania, United States d. 2004, South Plainfield, Middlesex, New Jersey, United States (Age 79 years) |
| | 11. Dorota Siwiec, b. 12 Sep 1925, Dupont, Luzerne, Pennsylvania, United States d. 29 Jul 1926, Pittston, Luzerne, Pennsylvania, United States (Age 0 years) |
| | 12. Living |
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