|  Male Pieter Feijo Onno Sickinghe | 
| Birth | 5 Feb 1824 | Groningen, Groningen, Nederland  | 
| Death | 8 Aug 1885 | Den Haag, Zuid-Holland, Nederland  | 
| Burial | ||
| Marriage | 14 May 1857 | Arnhem, Gelderland, Nederland  | 
| Other Spouse | Louisa Petronella Adriana Gevers Leuven | F1997 | |
| Marriage | 1 May 1873 | Utrecht, Utrecht, Nederland  | 
| Father | ||
| Mother | ||
|  Female Ottelina Cornelia van Eck | 
| Birth | 28 Apr 1833 | Arnhem, Gelderland, Nederland  | 
| Death | 24 Jun 1870 | Saint Gallen, Swtz.  | 
| Burial | ||
| Father | Mr Gerard van Eck | F1640 Group Sheet | |
| Mother | Agatha van Haersolte | F1640 Group Sheet | |