- Yes, date unknown
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- 1 Helmich, Heinrich [1] d. Yes, date unknown
- [---?---], Catherine d. Yes, date unknown
- 2 Helmich, Catherine Wilhelmine [1.1] b. 2 Jan 1841 d. 2 Aug 1905
- Knollenberg, Heinrich b. 7 Nov 1830 d. 25 May 1911
- 3 Knollenberg, Gerhard Hugo [1.1.1] b. 5 Oct 1864 d. Yes, date unknown
- 3 Knollenberg, Catherine Mathilde [1.1.2] b. 18 Feb 1866 d. Yes, date unknown
- 3 Knollenberg, Heinrich August [1.1.3] b. 28 Nov 1867 d. 9 Jul 1955
- 3 Knollenberg, Heinrich Herman [1.1.4] b. 1 Sep 1869 d. 10 Mar 1957
- 3 Knollenberg, Catharine Pauline [1.1.5] b. 1 Feb 1871 d. Yes, date unknown
- 3 Knollenberg, Ellen Marie [1.1.6] b. 16 Dec 1872 d. 24 Nov 1933
- 3 Knollenberg, Marie Wilhelmine [1.1.7] b. 20 Oct 1874 d. Yes, date unknown
- 3 Knollenberg, Heinrich David [1.1.8] b. 7 Mar 1876 d. 21 Jun 1886
- 3 Knollenberg, Olivia Willhelmine [1.1.9] b. 23 May 1878 d. 14 Nov 1880
- 3 Knollenberg, Friedrich Wilhelm [1.1.10] b. 3 Jun 1880 d. 9 Feb 1958
- 3 Knollenberg, Christine Wilhelmine [1.1.11] b. 5 Apr 1882 d. Dec 1887