|  Male Willem Johan Adriaan Jongkees | 
| Birth | 21 Jul 1881 | Zwolle, Overijsel, Nederland  | 
| Death | 19 Apr 1971 | Utrecht, Utrecht, Nederland  | 
| Burial | ||
| Marriage | 28 Dec 1910 | Groningen, Groningen, Nederland  | 
| Father | ||
| Mother | ||
|  Female Emilie Sophie Spruijt | 
| Birth | 15 Jul 1890 | Hoogezand, Groningen, Nederland  | 
| Death | 25 Apr 1973 | Utrecht, Utrecht, Nederland  | 
| Burial | ||
| Father | Adrianus Cornelis Leendert L. Spruyt | F1295 Group Sheet | |
| Mother | Anna Charlotte Reiniera van Heeckeren | F1295 Group Sheet | |