Children |
| 1. Joannes Michael Koper, b. 29 Sep 1856, Wormerveer, NH, NLD d. 31 Jul 1911, Amsterdam, NH, NLD (Age 54 years) |
| 2. Lourentius Koper, b. 03 May 1858, Wormerveer, NH, NLD d. 21 Dec 1898, Wormerveer, NH, NLD (Age 40 years) |
| 3. Maria Koper, b. 21 Oct 1859, Wormerveer, NH, NLD d. 09 Feb 1949, Zaandam, NH, NLD (Age 89 years) |
| 4. Catharina Koper, b. 07 Apr 1861, Wormerveer, NH, NLD d. 19 Jan 1925, Den Bosch, NB, NLD (Age 63 years) |
| 5. Cornelis Koper, b. 21 Jan 1863, Wormerveer, NH, NLD d. 19 Apr 1935, Wormerveer, NH, NLD (Age 72 years) |
| 6. Petrus Koper, b. 09 Mar 1865, Wormerveer, NH, NLD d. 22 Feb 1949, Koog aan de Zaan, NH, NLD (Age 83 years) |
| 7. Hermanus Koper, b. 04 Jul 1868, Wormerveer, NH, NLD d. 09 Nov 1868, Wormerveer, NH, NLD (Age 0 years) |
| 8. Afra Koper, b. 10 May 1870, Wormerveer, NH, NLD d. 25 May 1870, Wormerveer, NH, NLD (Age 0 years) |
| 9. Afra Koper, b. 23 May 1871, Wormerveer, NH, NLD d. 25 Jun 1871, Wormerveer, NH, NLD (Age 0 years) |
| 10. Aafje Koper, b. 17 Jun 1873, Wormerveer, NH, NLD d. 22 Dec 1965, Overasselt, GL, NLD (Age 92 years) |
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