Her siblings, who did not survive the Holocaust too, were Mietje, Emanuel, Flora, Isidore, George and Duifje. City Archive of Amsterdam, archive card of Marianna Loonstein.
In addition, a Jokos file (number 20488) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.
Person is in the National Database of Victims of Persecution