Cornelis Spermon (1774-1852) and Cornelia van Delft (1769-1850) had three or four children:

- Johannis or Johannes (..-1860 [4 KB] );
- Gijsbertus Johannes [4 KB] (1800-..);
- Joanna Maria [6 KB] (1803-1848 [4 KB] );
- Cornelius (1806-1883).

He was a shoemaker and his son Johannis was city announcer in Heusden.

From Gijsbertus we know that he married [4 KB] Helena van Herwaarden (1786) in 1835 in Heusden.

Cornelius (1805-1883) married in 1829 with Aaltje van Ipenburg in Schoonhoven (1808-..), they had a dochter Frederika Johanna [5 KB] (1845-1898).