Jantje de Jong was a daughter of Heiman Israels de Jong and Sara Siemens de Jong. She married Jakob Davidson on 1 May 1885 in Lemsterland, a son of David Davidson and Rachel Slager.
The couple had seven children, of whom their daughter Rachel probably deceased before the war and their son Izaak has…
Kinderen (allen geboren in Steenwijk)
Simon, 30 mei 1886
Rachel, 28 oktober 1887
Sara, 22 april 1889
David Jacob, 25 januari 1891
Iseroos, 7 januari 1893
Mendes, 4 januari 1895
Izaak, 7 september 1896
Bron SAA archiefkaart Jantje de Jong 15-7-1855
In addition, a Jokos file (number 13945) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.