Rachel Marchand-de Groot was the wife of Isaac Marchand.
Amsterdam municipal archive, Records Jokos, Möbel-claim 21294; property Joods Maatschappelijk Werk
In addition, a Jokos file (number 21294) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.