Leendert de Ridder
| Family | Pedigree | Reports |
| Leendert de Ridder |
| b. 22 Jan 1892 |
| d. 26 Nov 1962 |
| Cornelis de Ridder |
| b. 14 Jan 1827 |
| d. 1 Jun 1908 |
| Jacoba Koolen |
| b. 16 Jun 1846 |
| d. 20 Feb 1936 |
| Cornelia de Ridder |
| b. |
| d. 24 Dec 1835 |
| Paulus Koolen |
| b. |
| d. |
| Josina Schouten |
| b. |
| d. 28 Mar 1868 |