Cornelis Valkenburg

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- 1 Cornelis Valkenburg [1]
Hendrikje Schuilenburg
- 2 Bertha Valkenburg [1.1]
b. 5 Aug 1843 d. 1 Mar 1873
Jan Jacob Osnabrugge b. 6 Feb 1838 d. 9 Apr 1906
- 3 Cornelis Osnabrugge [1.1.1]
b. 19 Apr 1872 d. 27 Aug 1874
- 3 Cornelis Osnabrugge [1.1.1]
- 2 Bertha Valkenburg [1.1]