Siebe Koelman, birth 9 Dec 1778 Workum, died 15 May 1832 Bolsward, son of Joannes Koelman and Saapke Siebes Smits
Married 10 Jun 1807 Hemelumer Oldeferd to:
Baukje Heyes Wybrands, birth 1785 Leeuwarden, died 19 Mar 1824 Stavoren, daughter of Heye Wybrands and Hylk Heddes
1) Hendrikus Johannes Koelman, birth 16 Apr 1808 Workum, died 1808 Hindeloopen
2) Hendrikus Johannes Koelman, birth 27 Jul 1809 Workum, died 11 Jan 1884 Bolsward
Married 5 Jun 1831 Bolsward to:
Maria van Hettema, birth 15 Dec 1800 Bolsward, died 21 Sep 1874 Bolsward, daughter of Geele Ykes van Hettema and Aaltje Doekes Ydema
3) Joannes Gregorius Koelman, birth 18 Nov 1810 Leeuwarden
4) Laurentius Franciscus Koelman, birth 5 Oct 1812 Leeuwarden
Married 1 May 1836 Bolsward to:
Johanna Jacoba Hettema, birth 29 Mar 1807 Bolsward, daughter of Hans Montzes Hettema and Jaantje Gerbens van Albada
5) Bernardus Dominicus Koelman, birth 26 Feb 1815 Leeuwarden, died 19 Mar 1879 Franeker
6) Sabina Catharina Koelman, birth 26 Nov 1817 Leeuwarden, died 11 Mar 1820 Stavoren
7) Sabina Margaretha Koelman, birth 23 May 1820 Stavoren, died 26 Sep 1869 Franeker
8) Helena Koelman, birth 19 Mar 1822 Stavoren
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