Grietje Duifje Hillesum-Hillesum (19 januari 1869 - 28 april 1937) was weduwe van Jeremias Hillesum (Amsterdam, 22 november 1871 - Amsterdam, 4 maart 1920).
Johanna Mok-Hillesum worked as a dress maker at Maison de Bonneterie in Amsterdam. During the war she gave some items to a colleague for safekeeping. Addition of a visitor of the website