 Jacob Kamstra, son of Sjieuwke Sybrens Kamstra and Intje Jacobs Flapper.Born 19 Aug 1859 Lutkewierum, died 26 Jan 1935 Bolsward, age 75 years, buried Bolsward Married 22 May 1886 Wymbritseradeel, age 26 years (married 9 years) to:  Grietje Huisman, age by marriage 24 years, daughter of Gosse Pieters Huisman and Jourika Simmes van der Weide.Born 1 Feb 1862 Witmarsum, died 15 Jan 1896 Tjerkwerd, age 33 years, buried Blauwhuis | |||
| 2nd marriage Jacob Kamstra, son of Sjieuwke Sybrens Kamstra and Intje Jacobs Flapper. Married 13 May 1899 Wonseradeel, age 39 years (married 10 years) to: Tjitske Andries Sierkstra, age by marriage 39 years, daughter of Joannes Jarichs Sierkstra and Taetsche L Posthumus.Born 22 Oct 1859 Witmarsum, died 27 Nov 1909 Witmarsum, age 50 years, buried Witmarsum, 1st marriage to: Houke Anema, 2nd marriage to: Jacob Kamstra Child: 1. Sjieuwke KamstraBorn 16 Oct 1900 Witmarsum, died 22 Aug 1958 Tirol, age 57 years, buried Arnhem | |||
| 3rd marriage Jacob Kamstra, son of Sjieuwke Sybrens Kamstra and Intje Jacobs Flapper. Married 12 Nov 1910 Wonseradeel, age 51 years (married 23 years) to: Akke Teernstra, age by marriage 40 years, daughter of Douwe Feddes Teernstra and Reinskje Annes de Boer.Born 14 May 1870 Hieslum, died 19 Jul 1934 Bolsward, age 64 years, buried Bolsward | |||