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| Frederik de Jonge
 to: Egbertje Trip | 
| 1) Roelf de Jonge, birth 21 Nov 1882 Stadskanaal, gemeente Onstwedde, Groningen, Nederland 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 |