Children of this marriage:
1. (Legitimated) Elizabeth van Blerkom, born Rotterdam ZH (NL) 28 June 1851 † Rotterdam ZH (NL) 1 March 1925, marries Rotterdam ZH (NL) 28 May 1884 Gerardus Johannes Zimmerman, born Vrijenban ZH (NL) about 1859, son of Gerardus Zimmerman and Cornelia Tuijt. Children of this marriage: - Elizabeth Zimmerman, born Rotterdam ZH (NL) 11 July 1879.
- Gerardus Johannes Zimmerman, born Rotterdam ZH (NL) 9 December 1884.
- Cornelis Zimmerman, born Rotterdam ZH (NL) 5 February 1886.
- Cornelia Zimmerman, born Rotterdam ZH (NL) 1 January 1889.
- Cornelia Zimmerman, born Rotterdam ZH (NL) 19 May 1890.
- Maria Johanna Zimmerman, born Rotterdam ZH (NL) 25 December 1891.
- Gerardus Zimmerman, born Rotterdam ZH (NL) 23 February 1894.
- Karel Gerardus Zimmerman, born Rotterdam ZH (NL) 16 September 1895.
2. Johanna Maria van Blerkom, born Rotterdam ZH (NL) 7 September 1853, marries Rotterdam ZH (NL) 15 November 1876 Adrianus van Bodegraven, born Rotterdam ZH (NL) about 1849, son of Jan van Bodegraven and Johanna Elizabeth Eringaard. Children of this marriage: - Jan van Bodegraven, born Rotterdam ZH (NL) about 1877.
- Dirk van Bodegraven, born Rotterdam ZH (NL) about 1879.
- Adrianus van Bodegraven, born Rotterdam ZH (NL) about 1881.
- Cornelis van Bodegraven, born Rotterdam ZH (NL) about 1883.
3. Petrus Johannes Marinus van Blerkom, born Rotterdam ZH (NL) 29 March 1856.
4. Maria Johanna van Blerkom, born Rotterdam ZH (NL) 5 December 1857.
5. Johannes Wilhelmus van Blerkom, born Rotterdam ZH (NL) 7 April 1860.
6. Maria Johanna van Blerkom, born Rotterdam ZH (NL) 19 May 1862 † Rotterdam ZH (NL) 17 May 1925, marries Rotterdam ZH (NL) 7 September 1887 Adrianus Arnoldus Lezer, born Rotterdam ZH (NL) 4 February 1863, son of Nicolaas Pieter Lezer and Hendrina Petronella van der Leek. Children of this marriage: - ♂ Lezer, † Rotterdam ZH (NL) 30 September 1887.
- ♂ Lezer, † Rotterdam ZH (NL) 10 July 1888.
- ♀ Lezer, † Rotterdam ZH (NL) 9 May 1889.
- ♂ Lezer, † Rotterdam ZH (NL) 27 February 1890.
- Nicolaas Pieter Lezer, born Rotterdam ZH (NL) 5 February 1891 † Rotterdam ZH (NL) 22 November 1915.
- Dirk Lezer, born Rotterdam ZH (NL) 3 December 1892 † Rotterdam ZH (NL) 15 January 1893.
7. Dirk van Blerkom, born Rotterdam ZH (NL) 6 January 1865 † Rotterdam ZH (NL) 8 April 1869.
8. Petronella van Blerkom, born Rotterdam ZH (NL) 5 February 1867 † Rotterdam ZH (NL) 3 June 1869.
9. Cornelia Johanna van Blerkom, born Rotterdam ZH (NL) 14 February 1869 † Rotterdam ZH (NL) 13 July 1869.
10. Petronella van Blerkom, born Rotterdam ZH (NL) 20 April 1870 † Rotterdam ZH (NL) 18 April 1873.
11. Gerardina van Blerkom, born Rotterdam ZH (NL) 30 December 1873 † Rotterdam ZH (NL) 15 September 1911, marries Rotterdam ZH (NL) 18 May 1898 Jacobus Gerardus Remkes, born Rotterdam ZH (NL) 31 January 1873 † Rotterdam ZH (NL) 7 December 1923, son of Michiel Johannes Remkes and Alida Maria Johanna Visser.