| Children |
| | 1. James H DUNCAN, b. 1840, Illinois, United States d. Yes, date unknown |
| | 2. Mary Ann DUNCAN, b. 1842, Illinois, United States d. Yes, date unknown |
| | 3. Nancy J DUNCAN, b. 1842, Illinois, United States d. Yes, date unknown |
| | 4. Elizabeth F DUNCAN, b. 1844, Illinois, United States d. Yes, date unknown |
| | 5. Viola DUNCAN, b. Aug 1845, Illinois, United States d. Yes, date unknown |
| | 6. Narcissa DUNCAN, b. 1848, Illinois, United States d. Yes, date unknown |
| | 7. Franklin P DUNCAN, b. 1852, Illinois, United States d. Yes, date unknown |
| | 8. Thomas J DUNCAN, b. 1857, Illinois, United States d. Yes, date unknown |
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