| Family Tree Collection | Main index A-Z | Total index | Names | Index places | The Northern Data Base - Core version | 
| Family page | 
| Roelf de Jonge, birth 21 Nov 1882 Stadskanaal, gemeente Onstwedde, Groningen, Nederland, son of Frederik de Jonge and Egbertje Trip Married 12 Feb 1903 Groningen, Groningen, Nederland to: Trientje Velleman, birth 7 Jul 1880 Groningen, Groningen, Nederland, daughter of Samuel Marcus Velleman and Marchien Scholtens | 
| 1) Frederik de Jonge, birth 21 OKT 1905 Groningen, Groningen, Nederland |