Rachel van der Poorten was a daughter of Kosman van der Poorten and Ester Mozes Groen. She maried Wolf de Vries in 1885 in Amsterdam. He died in 1922. They had at least nine children, among whom Sophia (who died at a young age in 1918), Mozes, Eva (with whom she lived in 1941), Cosman (who died at a young age in 1896), Bloeme, Abraham, Isaac (who died at a young age in 1901) and Cosman.
Stadsarchief Amsterdam, archiefkaart Rachel van der Poorten
On 9 November 1942 Rachel van der Poorten was registered on Transvaalplein 21 huis, coming from Charlotte de Bourbonstraat 30 II. She lived there with her son Cosman.
A. Caransa, Verzamelen op het Transvaalplein. Ter nagedachtenis van het Joodse proletariaat van Amsterdam (Haarlem 1992) 100