| Clercq, de, Anna Marie | Quade | Clercq, de Friedrich Gottlob | 1901 |
| Clercq, de, Cath. Marg. | Schierholz | Clercq, de Johann Friedr. Wilh. | 1879 |
| Clercq, de, Georg Heinrich | 1900 | ||
| Clercq, de, Joh. Friedr. Wilh. | 1899 | ||
| Clercq, de, Metta Catharine Auguste | Gröning | Clercq, de Georg Heinrich | 1925 |