Children |
| 1. Harmen Koops Knol, b. 15 Aug 1849, Tjalleberd, Aengwirden, FR, NLD d. Bef 1856 (Age < 6 years) |
| 2. Jacob Koops Knol, b. 22 Feb 1851, Tjalleberd, Aengwirden, FR, NLD |
| 3. Bartje Koops Knol, b. 15 Sep 1853, Tjalleberd, Aengwirden, FR, NLD d. 1930, Mellen, Ashland Co., WI, USA (Age 76 years) |
| 4. Harmen Koops Knol, b. 28 Jul 1856, Tjalleberd, Aengwirden, FR, NLD |
| 5. Jantje Koops Knol, b. 27 Sep 1858, Tjalleberd, Aengwirden, FR, NLD |
| 6. Pieter Koops Knol, b. 16 May 1860, Oenkerk, Tietjerksteradeel, FR, NLD d. 1912, Mellen, Ashland Co., WI, USA (Age 51 years) |
| 7. Luite Koops Knol, b. 25 Feb 1863, Tjalleberd, Aengwirden, FR, NLD |
| 8. Antje Koops Knol, b. 11 Apr 1865, Tjalleberd, Aengwirden, FR, NLD |
| 9. Koop Koops Knol, b. 12 Jun 1867, Tjalleberd, Aengwirden, FR, NLD d. 1930, Lake Nebagamon, Douglas Co., WI, USA (Age 62 years) |
| 10. Wieger Koops Knol, b. 16 Feb 1870, Tjalleberd, Aengwirden, FR, NLD d. Bef 1871 (Age < 0 years) |
| 11. Ida Koops Knol, b. 16 Feb 1870, Tjalleberd, Aengwirden, FR, NLD |
| 12. Wieger Koops Knol, b. 03 Sep 1871, Tjalleberd, Aengwirden, FR, NLD d. 13 Aug 1939, Mellen, Ashland Co., WI, USA (Age 67 years) |
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