| Father | Johannes Cornelius van Blarcum |
| | Born | 29 November 1818 |
| | Died | 9 October 1896 |
| Mother | Maria Cornelia [Mietje] Velthuuijsen |
| | Born | 26 September 1810 |
| | Died | 2 November 1900 |
| Brother | Joannes Christianus born 21 November 1849 |
| Sister | Margaretha Maria born 3 March 1851 |
| Sister | Maria Anna born 1 July 1852 |
| Brother | Joannes Christianus born 25 September 1856 |
| Sister | Catharina Anna born 25 September 1856 |
