Jan Balthazar van der Upwich
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- 1 Jan Balthazar van der Upwich [1]
- Clasina Jorisse
- 2 Joseph Gaspard Auguste van den Upwich [1.1] b. Abt 1830 d. 3 May 1916
- Cato Dirkzwager b. Abt 1831 d. 4 Oct 1899
- 3 Clasina Johanna Catharina van der Upwich [1.1.1] b. Abt 1859 d. 1937
- Albertus Gerardus Boekwijt b. Abt 1856 d. 1914
- 4 Carel Johan Baltazar Boekwijt [1.1.1.1] b. 1890 d. 1942
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- 4 Carel Johan Baltazar Boekwijt [1.1.1.1]
- 3 Clasina Johanna Catharina van der Upwich [1.1.1]
- 2 Joseph Gaspard Auguste van den Upwich [1.1]